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1da177e4 LT |
1 | /* Linux driver for Philips webcam |
2 | USB and Video4Linux interface part. | |
3 | (C) 1999-2004 Nemosoft Unv. | |
2b455db6 | 4 | (C) 2004-2006 Luc Saillard (luc@saillard.org) |
1da177e4 LT |
5 | |
6 | NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx | |
7 | driver and thus may have bugs that are not present in the original version. | |
8 | Please send bug reports and support requests to <luc@saillard.org>. | |
9 | The decompression routines have been implemented by reverse-engineering the | |
10 | Nemosoft binary pwcx module. Caveat emptor. | |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | ||
26 | */ | |
27 | ||
d56410e0 | 28 | /* |
1da177e4 LT |
29 | This code forms the interface between the USB layers and the Philips |
30 | specific stuff. Some adanved stuff of the driver falls under an | |
31 | NDA, signed between me and Philips B.V., Eindhoven, the Netherlands, and | |
d56410e0 | 32 | is thus not distributed in source form. The binary pwcx.o module |
1da177e4 | 33 | contains the code that falls under the NDA. |
d56410e0 MCC |
34 | |
35 | In case you're wondering: 'pwc' stands for "Philips WebCam", but | |
1da177e4 LT |
36 | I really didn't want to type 'philips_web_cam' every time (I'm lazy as |
37 | any Linux kernel hacker, but I don't like uncomprehensible abbreviations | |
38 | without explanation). | |
d56410e0 | 39 | |
1da177e4 LT |
40 | Oh yes, convention: to disctinguish between all the various pointers to |
41 | device-structures, I use these names for the pointer variables: | |
42 | udev: struct usb_device * | |
43 | vdev: struct video_device * | |
44 | pdev: struct pwc_devive * | |
45 | */ | |
46 | ||
47 | /* Contributors: | |
48 | - Alvarado: adding whitebalance code | |
49 | - Alistar Moire: QuickCam 3000 Pro device/product ID | |
50 | - Tony Hoyle: Creative Labs Webcam 5 device/product ID | |
51 | - Mark Burazin: solving hang in VIDIOCSYNC when camera gets unplugged | |
52 | - Jk Fang: Sotec Afina Eye ID | |
53 | - Xavier Roche: QuickCam Pro 4000 ID | |
54 | - Jens Knudsen: QuickCam Zoom ID | |
55 | - J. Debert: QuickCam for Notebooks ID | |
e32a7ecc | 56 | - Pham Thanh Nam: webcam snapshot button as an event input device |
1da177e4 LT |
57 | */ |
58 | ||
59 | #include <linux/errno.h> | |
60 | #include <linux/init.h> | |
61 | #include <linux/mm.h> | |
62 | #include <linux/module.h> | |
63 | #include <linux/poll.h> | |
64 | #include <linux/slab.h> | |
405f5571 | 65 | #include <linux/smp_lock.h> |
e32a7ecc NPT |
66 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
67 | #include <linux/usb/input.h> | |
68 | #endif | |
1da177e4 LT |
69 | #include <linux/vmalloc.h> |
70 | #include <asm/io.h> | |
71 | ||
72 | #include "pwc.h" | |
1da177e4 LT |
73 | #include "pwc-kiara.h" |
74 | #include "pwc-timon.h" | |
2b455db6 LS |
75 | #include "pwc-dec23.h" |
76 | #include "pwc-dec1.h" | |
1da177e4 LT |
77 | #include "pwc-uncompress.h" |
78 | ||
79 | /* Function prototypes and driver templates */ | |
80 | ||
81 | /* hotplug device table support */ | |
2b455db6 | 82 | static const struct usb_device_id pwc_device_table [] = { |
1da177e4 LT |
83 | { USB_DEVICE(0x0471, 0x0302) }, /* Philips models */ |
84 | { USB_DEVICE(0x0471, 0x0303) }, | |
85 | { USB_DEVICE(0x0471, 0x0304) }, | |
86 | { USB_DEVICE(0x0471, 0x0307) }, | |
87 | { USB_DEVICE(0x0471, 0x0308) }, | |
88 | { USB_DEVICE(0x0471, 0x030C) }, | |
89 | { USB_DEVICE(0x0471, 0x0310) }, | |
2b455db6 | 90 | { USB_DEVICE(0x0471, 0x0311) }, /* Philips ToUcam PRO II */ |
1da177e4 LT |
91 | { USB_DEVICE(0x0471, 0x0312) }, |
92 | { USB_DEVICE(0x0471, 0x0313) }, /* the 'new' 720K */ | |
2b455db6 | 93 | { USB_DEVICE(0x0471, 0x0329) }, /* Philips SPC 900NC PC Camera */ |
1da177e4 LT |
94 | { USB_DEVICE(0x069A, 0x0001) }, /* Askey */ |
95 | { USB_DEVICE(0x046D, 0x08B0) }, /* Logitech QuickCam Pro 3000 */ | |
96 | { USB_DEVICE(0x046D, 0x08B1) }, /* Logitech QuickCam Notebook Pro */ | |
97 | { USB_DEVICE(0x046D, 0x08B2) }, /* Logitech QuickCam Pro 4000 */ | |
98 | { USB_DEVICE(0x046D, 0x08B3) }, /* Logitech QuickCam Zoom (old model) */ | |
99 | { USB_DEVICE(0x046D, 0x08B4) }, /* Logitech QuickCam Zoom (new model) */ | |
100 | { USB_DEVICE(0x046D, 0x08B5) }, /* Logitech QuickCam Orbit/Sphere */ | |
6b1ce3c1 MCC |
101 | { USB_DEVICE(0x046D, 0x08B6) }, /* Cisco VT Camera */ |
102 | { USB_DEVICE(0x046D, 0x08B7) }, /* Logitech ViewPort AV 100 */ | |
1da177e4 | 103 | { USB_DEVICE(0x046D, 0x08B8) }, /* Logitech (reserved) */ |
2b455db6 LS |
104 | { USB_DEVICE(0x055D, 0x9000) }, /* Samsung MPC-C10 */ |
105 | { USB_DEVICE(0x055D, 0x9001) }, /* Samsung MPC-C30 */ | |
106 | { USB_DEVICE(0x055D, 0x9002) }, /* Samsung SNC-35E (Ver3.0) */ | |
1da177e4 LT |
107 | { USB_DEVICE(0x041E, 0x400C) }, /* Creative Webcam 5 */ |
108 | { USB_DEVICE(0x041E, 0x4011) }, /* Creative Webcam Pro Ex */ | |
109 | { USB_DEVICE(0x04CC, 0x8116) }, /* Afina Eye */ | |
110 | { USB_DEVICE(0x06BE, 0x8116) }, /* new Afina Eye */ | |
111 | { USB_DEVICE(0x0d81, 0x1910) }, /* Visionite */ | |
112 | { USB_DEVICE(0x0d81, 0x1900) }, | |
113 | { } | |
114 | }; | |
115 | MODULE_DEVICE_TABLE(usb, pwc_device_table); | |
116 | ||
117 | static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id); | |
118 | static void usb_pwc_disconnect(struct usb_interface *intf); | |
119 | ||
120 | static struct usb_driver pwc_driver = { | |
1da177e4 LT |
121 | .name = "Philips webcam", /* name */ |
122 | .id_table = pwc_device_table, | |
123 | .probe = usb_pwc_probe, /* probe() */ | |
124 | .disconnect = usb_pwc_disconnect, /* disconnect() */ | |
125 | }; | |
126 | ||
127 | #define MAX_DEV_HINTS 20 | |
128 | #define MAX_ISOC_ERRORS 20 | |
129 | ||
130 | static int default_size = PSZ_QCIF; | |
131 | static int default_fps = 10; | |
132 | static int default_fbufs = 3; /* Default number of frame buffers */ | |
b930e1d8 | 133 | int pwc_mbufs = 2; /* Default number of mmap() buffers */ |
05ad3907 | 134 | #ifdef CONFIG_USB_PWC_DEBUG |
b930e1d8 | 135 | int pwc_trace = PWC_DEBUG_LEVEL; |
2b455db6 | 136 | #endif |
ff699e6b DSL |
137 | static int power_save; |
138 | static int led_on = 100, led_off; /* defaults to LED that is on while in use */ | |
b20c3cf0 | 139 | static int pwc_preferred_compression = 1; /* 0..3 = uncompressed..high */ |
1da177e4 LT |
140 | static struct { |
141 | int type; | |
142 | char serial_number[30]; | |
143 | int device_node; | |
144 | struct pwc_device *pdev; | |
145 | } device_hint[MAX_DEV_HINTS]; | |
146 | ||
147 | /***/ | |
148 | ||
bec43661 HV |
149 | static int pwc_video_open(struct file *file); |
150 | static int pwc_video_close(struct file *file); | |
2b455db6 | 151 | static ssize_t pwc_video_read(struct file *file, char __user *buf, |
1da177e4 LT |
152 | size_t count, loff_t *ppos); |
153 | static unsigned int pwc_video_poll(struct file *file, poll_table *wait); | |
069b7479 | 154 | static long pwc_video_ioctl(struct file *file, |
1da177e4 LT |
155 | unsigned int ioctlnr, unsigned long arg); |
156 | static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma); | |
157 | ||
bec43661 | 158 | static const struct v4l2_file_operations pwc_fops = { |
1da177e4 LT |
159 | .owner = THIS_MODULE, |
160 | .open = pwc_video_open, | |
161 | .release = pwc_video_close, | |
162 | .read = pwc_video_read, | |
163 | .poll = pwc_video_poll, | |
164 | .mmap = pwc_video_mmap, | |
165 | .ioctl = pwc_video_ioctl, | |
1da177e4 LT |
166 | }; |
167 | static struct video_device pwc_template = { | |
1da177e4 | 168 | .name = "Philips Webcam", /* Filled in later */ |
1da177e4 LT |
169 | .release = video_device_release, |
170 | .fops = &pwc_fops, | |
171 | .minor = -1, | |
172 | }; | |
173 | ||
174 | /***************************************************************************/ | |
175 | ||
176 | /* Okay, this is some magic that I worked out and the reasoning behind it... | |
177 | ||
d56410e0 | 178 | The biggest problem with any USB device is of course: "what to do |
1da177e4 LT |
179 | when the user unplugs the device while it is in use by an application?" |
180 | We have several options: | |
181 | 1) Curse them with the 7 plagues when they do (requires divine intervention) | |
182 | 2) Tell them not to (won't work: they'll do it anyway) | |
183 | 3) Oops the kernel (this will have a negative effect on a user's uptime) | |
184 | 4) Do something sensible. | |
d56410e0 | 185 | |
1da177e4 LT |
186 | Of course, we go for option 4. |
187 | ||
188 | It happens that this device will be linked to two times, once from | |
189 | usb_device and once from the video_device in their respective 'private' | |
190 | pointers. This is done when the device is probed() and all initialization | |
191 | succeeded. The pwc_device struct links back to both structures. | |
192 | ||
d56410e0 MCC |
193 | When a device is unplugged while in use it will be removed from the |
194 | list of known USB devices; I also de-register it as a V4L device, but | |
1da177e4 LT |
195 | unfortunately I can't free the memory since the struct is still in use |
196 | by the file descriptor. This free-ing is then deferend until the first | |
197 | opportunity. Crude, but it works. | |
d56410e0 | 198 | |
1da177e4 LT |
199 | A small 'advantage' is that if a user unplugs the cam and plugs it back |
200 | in, it should get assigned the same video device minor, but unfortunately | |
d56410e0 | 201 | it's non-trivial to re-link the cam back to the video device... (that |
1da177e4 LT |
202 | would surely be magic! :)) |
203 | */ | |
204 | ||
205 | /***************************************************************************/ | |
206 | /* Private functions */ | |
207 | ||
208 | /* Here we want the physical address of the memory. | |
209 | * This is used when initializing the contents of the area. | |
210 | */ | |
1da177e4 | 211 | |
1da177e4 | 212 | |
2b455db6 LS |
213 | |
214 | static void *pwc_rvmalloc(unsigned long size) | |
1da177e4 LT |
215 | { |
216 | void * mem; | |
217 | unsigned long adr; | |
218 | ||
d56410e0 | 219 | mem=vmalloc_32(size); |
2b455db6 LS |
220 | if (!mem) |
221 | return NULL; | |
222 | ||
223 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ | |
224 | adr=(unsigned long) mem; | |
225 | while (size > 0) | |
226 | { | |
227 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
228 | adr += PAGE_SIZE; | |
229 | size -= PAGE_SIZE; | |
230 | } | |
1da177e4 LT |
231 | return mem; |
232 | } | |
233 | ||
2b455db6 | 234 | static void pwc_rvfree(void * mem, unsigned long size) |
1da177e4 | 235 | { |
d56410e0 | 236 | unsigned long adr; |
1da177e4 | 237 | |
2b455db6 LS |
238 | if (!mem) |
239 | return; | |
240 | ||
241 | adr=(unsigned long) mem; | |
242 | while ((long) size > 0) | |
243 | { | |
244 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
245 | adr += PAGE_SIZE; | |
246 | size -= PAGE_SIZE; | |
247 | } | |
248 | vfree(mem); | |
1da177e4 LT |
249 | } |
250 | ||
251 | ||
252 | ||
253 | ||
254 | static int pwc_allocate_buffers(struct pwc_device *pdev) | |
255 | { | |
2b455db6 | 256 | int i, err; |
1da177e4 LT |
257 | void *kbuf; |
258 | ||
2b455db6 | 259 | PWC_DEBUG_MEMORY(">> pwc_allocate_buffers(pdev = 0x%p)\n", pdev); |
1da177e4 LT |
260 | |
261 | if (pdev == NULL) | |
262 | return -ENXIO; | |
d56410e0 | 263 | |
2b455db6 | 264 | /* Allocate Isochronuous pipe buffers */ |
1da177e4 LT |
265 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
266 | if (pdev->sbuf[i].data == NULL) { | |
2b455db6 | 267 | kbuf = kzalloc(ISO_BUFFER_SIZE, GFP_KERNEL); |
1da177e4 | 268 | if (kbuf == NULL) { |
2b455db6 | 269 | PWC_ERROR("Failed to allocate iso buffer %d.\n", i); |
1da177e4 LT |
270 | return -ENOMEM; |
271 | } | |
2b455db6 | 272 | PWC_DEBUG_MEMORY("Allocated iso buffer at %p.\n", kbuf); |
1da177e4 | 273 | pdev->sbuf[i].data = kbuf; |
1da177e4 LT |
274 | } |
275 | } | |
276 | ||
277 | /* Allocate frame buffer structure */ | |
278 | if (pdev->fbuf == NULL) { | |
2b455db6 | 279 | kbuf = kzalloc(default_fbufs * sizeof(struct pwc_frame_buf), GFP_KERNEL); |
1da177e4 | 280 | if (kbuf == NULL) { |
2b455db6 | 281 | PWC_ERROR("Failed to allocate frame buffer structure.\n"); |
1da177e4 LT |
282 | return -ENOMEM; |
283 | } | |
2b455db6 | 284 | PWC_DEBUG_MEMORY("Allocated frame buffer structure at %p.\n", kbuf); |
1da177e4 | 285 | pdev->fbuf = kbuf; |
1da177e4 | 286 | } |
2b455db6 | 287 | |
1da177e4 LT |
288 | /* create frame buffers, and make circular ring */ |
289 | for (i = 0; i < default_fbufs; i++) { | |
290 | if (pdev->fbuf[i].data == NULL) { | |
291 | kbuf = vmalloc(PWC_FRAME_SIZE); /* need vmalloc since frame buffer > 128K */ | |
292 | if (kbuf == NULL) { | |
2b455db6 | 293 | PWC_ERROR("Failed to allocate frame buffer %d.\n", i); |
1da177e4 LT |
294 | return -ENOMEM; |
295 | } | |
2b455db6 | 296 | PWC_DEBUG_MEMORY("Allocated frame buffer %d at %p.\n", i, kbuf); |
1da177e4 | 297 | pdev->fbuf[i].data = kbuf; |
2b455db6 | 298 | memset(kbuf, 0, PWC_FRAME_SIZE); |
1da177e4 LT |
299 | } |
300 | } | |
d56410e0 | 301 | |
1da177e4 | 302 | /* Allocate decompressor table space */ |
2b455db6 LS |
303 | if (DEVICE_USE_CODEC1(pdev->type)) |
304 | err = pwc_dec1_alloc(pdev); | |
305 | else | |
306 | err = pwc_dec23_alloc(pdev); | |
307 | ||
308 | if (err) { | |
309 | PWC_ERROR("Failed to allocate decompress table.\n"); | |
310 | return err; | |
311 | } | |
d56410e0 | 312 | |
1da177e4 | 313 | /* Allocate image buffer; double buffer for mmap() */ |
2b455db6 | 314 | kbuf = pwc_rvmalloc(pwc_mbufs * pdev->len_per_image); |
1da177e4 | 315 | if (kbuf == NULL) { |
2b455db6 LS |
316 | PWC_ERROR("Failed to allocate image buffer(s). needed (%d)\n", |
317 | pwc_mbufs * pdev->len_per_image); | |
1da177e4 LT |
318 | return -ENOMEM; |
319 | } | |
2b455db6 | 320 | PWC_DEBUG_MEMORY("Allocated image buffer at %p.\n", kbuf); |
1da177e4 | 321 | pdev->image_data = kbuf; |
2b455db6 LS |
322 | for (i = 0; i < pwc_mbufs; i++) { |
323 | pdev->images[i].offset = i * pdev->len_per_image; | |
324 | pdev->images[i].vma_use_count = 0; | |
325 | } | |
326 | for (; i < MAX_IMAGES; i++) { | |
327 | pdev->images[i].offset = 0; | |
328 | } | |
1da177e4 LT |
329 | |
330 | kbuf = NULL; | |
d56410e0 | 331 | |
2b455db6 | 332 | PWC_DEBUG_MEMORY("<< pwc_allocate_buffers()\n"); |
1da177e4 LT |
333 | return 0; |
334 | } | |
335 | ||
336 | static void pwc_free_buffers(struct pwc_device *pdev) | |
337 | { | |
338 | int i; | |
339 | ||
2b455db6 | 340 | PWC_DEBUG_MEMORY("Entering free_buffers(%p).\n", pdev); |
1da177e4 LT |
341 | |
342 | if (pdev == NULL) | |
343 | return; | |
1da177e4 LT |
344 | /* Release Iso-pipe buffers */ |
345 | for (i = 0; i < MAX_ISO_BUFS; i++) | |
346 | if (pdev->sbuf[i].data != NULL) { | |
2b455db6 | 347 | PWC_DEBUG_MEMORY("Freeing ISO buffer at %p.\n", pdev->sbuf[i].data); |
1da177e4 LT |
348 | kfree(pdev->sbuf[i].data); |
349 | pdev->sbuf[i].data = NULL; | |
350 | } | |
351 | ||
352 | /* The same for frame buffers */ | |
353 | if (pdev->fbuf != NULL) { | |
354 | for (i = 0; i < default_fbufs; i++) { | |
355 | if (pdev->fbuf[i].data != NULL) { | |
2b455db6 | 356 | PWC_DEBUG_MEMORY("Freeing frame buffer %d at %p.\n", i, pdev->fbuf[i].data); |
1da177e4 LT |
357 | vfree(pdev->fbuf[i].data); |
358 | pdev->fbuf[i].data = NULL; | |
359 | } | |
360 | } | |
361 | kfree(pdev->fbuf); | |
362 | pdev->fbuf = NULL; | |
363 | } | |
364 | ||
365 | /* Intermediate decompression buffer & tables */ | |
366 | if (pdev->decompress_data != NULL) { | |
2b455db6 | 367 | PWC_DEBUG_MEMORY("Freeing decompression buffer at %p.\n", pdev->decompress_data); |
1da177e4 LT |
368 | kfree(pdev->decompress_data); |
369 | pdev->decompress_data = NULL; | |
370 | } | |
1da177e4 LT |
371 | |
372 | /* Release image buffers */ | |
373 | if (pdev->image_data != NULL) { | |
2b455db6 LS |
374 | PWC_DEBUG_MEMORY("Freeing image buffer at %p.\n", pdev->image_data); |
375 | pwc_rvfree(pdev->image_data, pwc_mbufs * pdev->len_per_image); | |
1da177e4 LT |
376 | } |
377 | pdev->image_data = NULL; | |
d56410e0 | 378 | |
2b455db6 | 379 | PWC_DEBUG_MEMORY("Leaving free_buffers().\n"); |
1da177e4 LT |
380 | } |
381 | ||
d56410e0 | 382 | /* The frame & image buffer mess. |
1da177e4 LT |
383 | |
384 | Yes, this is a mess. Well, it used to be simple, but alas... In this | |
385 | module, 3 buffers schemes are used to get the data from the USB bus to | |
386 | the user program. The first scheme involves the ISO buffers (called thus | |
387 | since they transport ISO data from the USB controller), and not really | |
d56410e0 | 388 | interesting. Suffices to say the data from this buffer is quickly |
1da177e4 LT |
389 | gathered in an interrupt handler (pwc_isoc_handler) and placed into the |
390 | frame buffer. | |
391 | ||
392 | The frame buffer is the second scheme, and is the central element here. | |
393 | It collects the data from a single frame from the camera (hence, the | |
394 | name). Frames are delimited by the USB camera with a short USB packet, | |
395 | so that's easy to detect. The frame buffers form a list that is filled | |
396 | by the camera+USB controller and drained by the user process through | |
397 | either read() or mmap(). | |
398 | ||
399 | The image buffer is the third scheme, in which frames are decompressed | |
400 | and converted into planar format. For mmap() there is more than | |
401 | one image buffer available. | |
402 | ||
403 | The frame buffers provide the image buffering. In case the user process | |
404 | is a bit slow, this introduces lag and some undesired side-effects. | |
405 | The problem arises when the frame buffer is full. I used to drop the last | |
406 | frame, which makes the data in the queue stale very quickly. But dropping | |
407 | the frame at the head of the queue proved to be a litte bit more difficult. | |
408 | I tried a circular linked scheme, but this introduced more problems than | |
409 | it solved. | |
410 | ||
411 | Because filling and draining are completely asynchronous processes, this | |
412 | requires some fiddling with pointers and mutexes. | |
413 | ||
414 | Eventually, I came up with a system with 2 lists: an 'empty' frame list | |
415 | and a 'full' frame list: | |
416 | * Initially, all frame buffers but one are on the 'empty' list; the one | |
417 | remaining buffer is our initial fill frame. | |
d56410e0 MCC |
418 | * If a frame is needed for filling, we try to take it from the 'empty' |
419 | list, unless that list is empty, in which case we take the buffer at | |
1da177e4 LT |
420 | the head of the 'full' list. |
421 | * When our fill buffer has been filled, it is appended to the 'full' | |
422 | list. | |
423 | * If a frame is needed by read() or mmap(), it is taken from the head of | |
424 | the 'full' list, handled, and then appended to the 'empty' list. If no | |
425 | buffer is present on the 'full' list, we wait. | |
426 | The advantage is that the buffer that is currently being decompressed/ | |
427 | converted, is on neither list, and thus not in our way (any other scheme | |
428 | I tried had the problem of old data lingering in the queue). | |
429 | ||
430 | Whatever strategy you choose, it always remains a tradeoff: with more | |
431 | frame buffers the chances of a missed frame are reduced. On the other | |
432 | hand, on slower machines it introduces lag because the queue will | |
433 | always be full. | |
434 | */ | |
435 | ||
436 | /** | |
437 | \brief Find next frame buffer to fill. Take from empty or full list, whichever comes first. | |
438 | */ | |
2b455db6 | 439 | static int pwc_next_fill_frame(struct pwc_device *pdev) |
1da177e4 LT |
440 | { |
441 | int ret; | |
442 | unsigned long flags; | |
443 | ||
444 | ret = 0; | |
445 | spin_lock_irqsave(&pdev->ptrlock, flags); | |
446 | if (pdev->fill_frame != NULL) { | |
447 | /* append to 'full' list */ | |
448 | if (pdev->full_frames == NULL) { | |
449 | pdev->full_frames = pdev->fill_frame; | |
450 | pdev->full_frames_tail = pdev->full_frames; | |
451 | } | |
452 | else { | |
453 | pdev->full_frames_tail->next = pdev->fill_frame; | |
454 | pdev->full_frames_tail = pdev->fill_frame; | |
455 | } | |
456 | } | |
457 | if (pdev->empty_frames != NULL) { | |
458 | /* We have empty frames available. That's easy */ | |
459 | pdev->fill_frame = pdev->empty_frames; | |
460 | pdev->empty_frames = pdev->empty_frames->next; | |
461 | } | |
462 | else { | |
463 | /* Hmm. Take it from the full list */ | |
1da177e4 LT |
464 | /* sanity check */ |
465 | if (pdev->full_frames == NULL) { | |
2b455db6 | 466 | PWC_ERROR("Neither empty or full frames available!\n"); |
1da177e4 LT |
467 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
468 | return -EINVAL; | |
469 | } | |
1da177e4 LT |
470 | pdev->fill_frame = pdev->full_frames; |
471 | pdev->full_frames = pdev->full_frames->next; | |
472 | ret = 1; | |
473 | } | |
474 | pdev->fill_frame->next = NULL; | |
1da177e4 LT |
475 | spin_unlock_irqrestore(&pdev->ptrlock, flags); |
476 | return ret; | |
477 | } | |
478 | ||
479 | ||
480 | /** | |
481 | \brief Reset all buffers, pointers and lists, except for the image_used[] buffer. | |
482 | ||
483 | If the image_used[] buffer is cleared too, mmap()/VIDIOCSYNC will run into trouble. | |
484 | */ | |
485 | static void pwc_reset_buffers(struct pwc_device *pdev) | |
486 | { | |
487 | int i; | |
488 | unsigned long flags; | |
489 | ||
645635b0 | 490 | PWC_DEBUG_MEMORY(">> %s __enter__\n", __func__); |
2b455db6 | 491 | |
1da177e4 LT |
492 | spin_lock_irqsave(&pdev->ptrlock, flags); |
493 | pdev->full_frames = NULL; | |
494 | pdev->full_frames_tail = NULL; | |
495 | for (i = 0; i < default_fbufs; i++) { | |
496 | pdev->fbuf[i].filled = 0; | |
497 | if (i > 0) | |
498 | pdev->fbuf[i].next = &pdev->fbuf[i - 1]; | |
499 | else | |
500 | pdev->fbuf->next = NULL; | |
501 | } | |
502 | pdev->empty_frames = &pdev->fbuf[default_fbufs - 1]; | |
503 | pdev->empty_frames_tail = pdev->fbuf; | |
504 | pdev->read_frame = NULL; | |
505 | pdev->fill_frame = pdev->empty_frames; | |
506 | pdev->empty_frames = pdev->empty_frames->next; | |
507 | ||
508 | pdev->image_read_pos = 0; | |
509 | pdev->fill_image = 0; | |
510 | spin_unlock_irqrestore(&pdev->ptrlock, flags); | |
2b455db6 | 511 | |
645635b0 | 512 | PWC_DEBUG_MEMORY("<< %s __leaving__\n", __func__); |
1da177e4 LT |
513 | } |
514 | ||
515 | ||
516 | /** | |
517 | \brief Do all the handling for getting one frame: get pointer, decompress, advance pointers. | |
518 | */ | |
2b455db6 | 519 | int pwc_handle_frame(struct pwc_device *pdev) |
1da177e4 LT |
520 | { |
521 | int ret = 0; | |
522 | unsigned long flags; | |
523 | ||
524 | spin_lock_irqsave(&pdev->ptrlock, flags); | |
525 | /* First grab our read_frame; this is removed from all lists, so | |
526 | we can release the lock after this without problems */ | |
527 | if (pdev->read_frame != NULL) { | |
528 | /* This can't theoretically happen */ | |
2b455db6 LS |
529 | PWC_ERROR("Huh? Read frame still in use?\n"); |
530 | spin_unlock_irqrestore(&pdev->ptrlock, flags); | |
531 | return ret; | |
532 | } | |
533 | ||
534 | ||
535 | if (pdev->full_frames == NULL) { | |
536 | PWC_ERROR("Woops. No frames ready.\n"); | |
1da177e4 LT |
537 | } |
538 | else { | |
2b455db6 LS |
539 | pdev->read_frame = pdev->full_frames; |
540 | pdev->full_frames = pdev->full_frames->next; | |
541 | pdev->read_frame->next = NULL; | |
542 | } | |
543 | ||
544 | if (pdev->read_frame != NULL) { | |
efad798b | 545 | /* Decompression is a lengthy process, so it's outside of the lock. |
2b455db6 LS |
546 | This gives the isoc_handler the opportunity to fill more frames |
547 | in the mean time. | |
548 | */ | |
549 | spin_unlock_irqrestore(&pdev->ptrlock, flags); | |
550 | ret = pwc_decompress(pdev); | |
551 | spin_lock_irqsave(&pdev->ptrlock, flags); | |
552 | ||
553 | /* We're done with read_buffer, tack it to the end of the empty buffer list */ | |
554 | if (pdev->empty_frames == NULL) { | |
555 | pdev->empty_frames = pdev->read_frame; | |
556 | pdev->empty_frames_tail = pdev->empty_frames; | |
1da177e4 LT |
557 | } |
558 | else { | |
2b455db6 LS |
559 | pdev->empty_frames_tail->next = pdev->read_frame; |
560 | pdev->empty_frames_tail = pdev->read_frame; | |
1da177e4 | 561 | } |
2b455db6 | 562 | pdev->read_frame = NULL; |
1da177e4 LT |
563 | } |
564 | spin_unlock_irqrestore(&pdev->ptrlock, flags); | |
565 | return ret; | |
566 | } | |
567 | ||
568 | /** | |
569 | \brief Advance pointers of image buffer (after each user request) | |
570 | */ | |
2b455db6 | 571 | void pwc_next_image(struct pwc_device *pdev) |
1da177e4 LT |
572 | { |
573 | pdev->image_used[pdev->fill_image] = 0; | |
2b455db6 | 574 | pdev->fill_image = (pdev->fill_image + 1) % pwc_mbufs; |
1da177e4 LT |
575 | } |
576 | ||
2b455db6 LS |
577 | /** |
578 | * Print debug information when a frame is discarded because all of our buffer | |
579 | * is full | |
580 | */ | |
581 | static void pwc_frame_dumped(struct pwc_device *pdev) | |
582 | { | |
583 | pdev->vframes_dumped++; | |
584 | if (pdev->vframe_count < FRAME_LOWMARK) | |
585 | return; | |
586 | ||
587 | if (pdev->vframes_dumped < 20) | |
588 | PWC_DEBUG_FLOW("Dumping frame %d\n", pdev->vframe_count); | |
589 | else if (pdev->vframes_dumped == 20) | |
590 | PWC_DEBUG_FLOW("Dumping frame %d (last message)\n", | |
591 | pdev->vframe_count); | |
592 | } | |
593 | ||
e32a7ecc NPT |
594 | static void pwc_snapshot_button(struct pwc_device *pdev, int down) |
595 | { | |
596 | if (down) { | |
597 | PWC_TRACE("Snapshot button pressed.\n"); | |
598 | pdev->snapshot_button_status = 1; | |
599 | } else { | |
600 | PWC_TRACE("Snapshot button released.\n"); | |
601 | } | |
602 | ||
603 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV | |
604 | if (pdev->button_dev) { | |
bcd3e4b3 | 605 | input_report_key(pdev->button_dev, KEY_CAMERA, down); |
e32a7ecc NPT |
606 | input_sync(pdev->button_dev); |
607 | } | |
608 | #endif | |
609 | } | |
610 | ||
2b455db6 LS |
611 | static int pwc_rcv_short_packet(struct pwc_device *pdev, const struct pwc_frame_buf *fbuf) |
612 | { | |
613 | int awake = 0; | |
614 | ||
615 | /* The ToUCam Fun CMOS sensor causes the firmware to send 2 or 3 bogus | |
616 | frames on the USB wire after an exposure change. This conditition is | |
617 | however detected in the cam and a bit is set in the header. | |
618 | */ | |
619 | if (pdev->type == 730) { | |
620 | unsigned char *ptr = (unsigned char *)fbuf->data; | |
621 | ||
622 | if (ptr[1] == 1 && ptr[0] & 0x10) { | |
623 | PWC_TRACE("Hyundai CMOS sensor bug. Dropping frame.\n"); | |
624 | pdev->drop_frames += 2; | |
625 | pdev->vframes_error++; | |
626 | } | |
627 | if ((ptr[0] ^ pdev->vmirror) & 0x01) { | |
e32a7ecc | 628 | pwc_snapshot_button(pdev, ptr[0] & 0x01); |
2b455db6 LS |
629 | } |
630 | if ((ptr[0] ^ pdev->vmirror) & 0x02) { | |
631 | if (ptr[0] & 0x02) | |
632 | PWC_TRACE("Image is mirrored.\n"); | |
633 | else | |
634 | PWC_TRACE("Image is normal.\n"); | |
635 | } | |
636 | pdev->vmirror = ptr[0] & 0x03; | |
637 | /* Sometimes the trailer of the 730 is still sent as a 4 byte packet | |
638 | after a short frame; this condition is filtered out specifically. A 4 byte | |
639 | frame doesn't make sense anyway. | |
640 | So we get either this sequence: | |
641 | drop_bit set -> 4 byte frame -> short frame -> good frame | |
642 | Or this one: | |
643 | drop_bit set -> short frame -> good frame | |
644 | So we drop either 3 or 2 frames in all! | |
645 | */ | |
646 | if (fbuf->filled == 4) | |
647 | pdev->drop_frames++; | |
648 | } | |
649 | else if (pdev->type == 740 || pdev->type == 720) { | |
650 | unsigned char *ptr = (unsigned char *)fbuf->data; | |
651 | if ((ptr[0] ^ pdev->vmirror) & 0x01) { | |
e32a7ecc | 652 | pwc_snapshot_button(pdev, ptr[0] & 0x01); |
2b455db6 LS |
653 | } |
654 | pdev->vmirror = ptr[0] & 0x03; | |
655 | } | |
656 | ||
657 | /* In case we were instructed to drop the frame, do so silently. | |
658 | The buffer pointers are not updated either (but the counters are reset below). | |
659 | */ | |
660 | if (pdev->drop_frames > 0) | |
661 | pdev->drop_frames--; | |
662 | else { | |
663 | /* Check for underflow first */ | |
664 | if (fbuf->filled < pdev->frame_total_size) { | |
665 | PWC_DEBUG_FLOW("Frame buffer underflow (%d bytes);" | |
666 | " discarded.\n", fbuf->filled); | |
667 | pdev->vframes_error++; | |
668 | } | |
669 | else { | |
670 | /* Send only once per EOF */ | |
671 | awake = 1; /* delay wake_ups */ | |
672 | ||
673 | /* Find our next frame to fill. This will always succeed, since we | |
674 | * nick a frame from either empty or full list, but if we had to | |
675 | * take it from the full list, it means a frame got dropped. | |
676 | */ | |
677 | if (pwc_next_fill_frame(pdev)) | |
678 | pwc_frame_dumped(pdev); | |
679 | ||
680 | } | |
681 | } /* !drop_frames */ | |
682 | pdev->vframe_count++; | |
683 | return awake; | |
684 | } | |
1da177e4 LT |
685 | |
686 | /* This gets called for the Isochronous pipe (video). This is done in | |
687 | * interrupt time, so it has to be fast, not crash, and not stall. Neat. | |
688 | */ | |
7d12e780 | 689 | static void pwc_isoc_handler(struct urb *urb) |
1da177e4 LT |
690 | { |
691 | struct pwc_device *pdev; | |
692 | int i, fst, flen; | |
693 | int awake; | |
694 | struct pwc_frame_buf *fbuf; | |
695 | unsigned char *fillptr = NULL, *iso_buf = NULL; | |
696 | ||
697 | awake = 0; | |
698 | pdev = (struct pwc_device *)urb->context; | |
699 | if (pdev == NULL) { | |
2b455db6 | 700 | PWC_ERROR("isoc_handler() called with NULL device?!\n"); |
1da177e4 LT |
701 | return; |
702 | } | |
2b455db6 | 703 | |
1da177e4 | 704 | if (urb->status == -ENOENT || urb->status == -ECONNRESET) { |
2b455db6 | 705 | PWC_DEBUG_OPEN("URB (%p) unlinked %ssynchronuously.\n", urb, urb->status == -ENOENT ? "" : "a"); |
1da177e4 LT |
706 | return; |
707 | } | |
708 | if (urb->status != -EINPROGRESS && urb->status != 0) { | |
709 | const char *errmsg; | |
710 | ||
711 | errmsg = "Unknown"; | |
712 | switch(urb->status) { | |
713 | case -ENOSR: errmsg = "Buffer error (overrun)"; break; | |
714 | case -EPIPE: errmsg = "Stalled (device not responding)"; break; | |
715 | case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; | |
716 | case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; | |
717 | case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; | |
38e2bfc9 | 718 | case -ETIME: errmsg = "Device does not respond"; break; |
1da177e4 | 719 | } |
2b455db6 | 720 | PWC_DEBUG_FLOW("pwc_isoc_handler() called with status %d [%s].\n", urb->status, errmsg); |
d56410e0 | 721 | /* Give up after a number of contiguous errors on the USB bus. |
1da177e4 LT |
722 | Appearantly something is wrong so we simulate an unplug event. |
723 | */ | |
724 | if (++pdev->visoc_errors > MAX_ISOC_ERRORS) | |
725 | { | |
2b455db6 | 726 | PWC_INFO("Too many ISOC errors, bailing out.\n"); |
1da177e4 LT |
727 | pdev->error_status = EIO; |
728 | awake = 1; | |
729 | wake_up_interruptible(&pdev->frameq); | |
730 | } | |
731 | goto handler_end; // ugly, but practical | |
732 | } | |
733 | ||
734 | fbuf = pdev->fill_frame; | |
735 | if (fbuf == NULL) { | |
2b455db6 | 736 | PWC_ERROR("pwc_isoc_handler without valid fill frame.\n"); |
1da177e4 LT |
737 | awake = 1; |
738 | goto handler_end; | |
739 | } | |
740 | else { | |
741 | fillptr = fbuf->data + fbuf->filled; | |
742 | } | |
743 | ||
744 | /* Reset ISOC error counter. We did get here, after all. */ | |
745 | pdev->visoc_errors = 0; | |
746 | ||
747 | /* vsync: 0 = don't copy data | |
d56410e0 MCC |
748 | 1 = sync-hunt |
749 | 2 = synched | |
1da177e4 LT |
750 | */ |
751 | /* Compact data */ | |
752 | for (i = 0; i < urb->number_of_packets; i++) { | |
753 | fst = urb->iso_frame_desc[i].status; | |
754 | flen = urb->iso_frame_desc[i].actual_length; | |
755 | iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
756 | if (fst == 0) { | |
757 | if (flen > 0) { /* if valid data... */ | |
758 | if (pdev->vsync > 0) { /* ...and we are not sync-hunting... */ | |
759 | pdev->vsync = 2; | |
760 | ||
761 | /* ...copy data to frame buffer, if possible */ | |
762 | if (flen + fbuf->filled > pdev->frame_total_size) { | |
2b455db6 | 763 | PWC_DEBUG_FLOW("Frame buffer overflow (flen = %d, frame_total_size = %d).\n", flen, pdev->frame_total_size); |
1da177e4 LT |
764 | pdev->vsync = 0; /* Hmm, let's wait for an EOF (end-of-frame) */ |
765 | pdev->vframes_error++; | |
766 | } | |
767 | else { | |
768 | memmove(fillptr, iso_buf, flen); | |
769 | fillptr += flen; | |
770 | } | |
771 | } | |
772 | fbuf->filled += flen; | |
773 | } /* ..flen > 0 */ | |
774 | ||
775 | if (flen < pdev->vlast_packet_size) { | |
d56410e0 | 776 | /* Shorter packet... We probably have the end of an image-frame; |
1da177e4 LT |
777 | wake up read() process and let select()/poll() do something. |
778 | Decompression is done in user time over there. | |
2b455db6 | 779 | */ |
1da177e4 | 780 | if (pdev->vsync == 2) { |
2b455db6 LS |
781 | if (pwc_rcv_short_packet(pdev, fbuf)) { |
782 | awake = 1; | |
783 | fbuf = pdev->fill_frame; | |
1da177e4 | 784 | } |
1da177e4 LT |
785 | } |
786 | fbuf->filled = 0; | |
787 | fillptr = fbuf->data; | |
788 | pdev->vsync = 1; | |
2b455db6 LS |
789 | } |
790 | ||
1da177e4 LT |
791 | pdev->vlast_packet_size = flen; |
792 | } /* ..status == 0 */ | |
1da177e4 | 793 | else { |
2b455db6 | 794 | /* This is normally not interesting to the user, unless |
ff699e6b DSL |
795 | * you are really debugging something, default = 0 */ |
796 | static int iso_error; | |
1da177e4 LT |
797 | iso_error++; |
798 | if (iso_error < 20) | |
2b455db6 | 799 | PWC_DEBUG_FLOW("Iso frame %d of USB has error %d\n", i, fst); |
1da177e4 | 800 | } |
1da177e4 LT |
801 | } |
802 | ||
803 | handler_end: | |
804 | if (awake) | |
805 | wake_up_interruptible(&pdev->frameq); | |
806 | ||
807 | urb->dev = pdev->udev; | |
808 | i = usb_submit_urb(urb, GFP_ATOMIC); | |
809 | if (i != 0) | |
2b455db6 | 810 | PWC_ERROR("Error (%d) re-submitting urb in pwc_isoc_handler.\n", i); |
1da177e4 LT |
811 | } |
812 | ||
813 | ||
2b455db6 | 814 | int pwc_isoc_init(struct pwc_device *pdev) |
1da177e4 LT |
815 | { |
816 | struct usb_device *udev; | |
817 | struct urb *urb; | |
818 | int i, j, ret; | |
819 | ||
820 | struct usb_interface *intf; | |
821 | struct usb_host_interface *idesc = NULL; | |
822 | ||
823 | if (pdev == NULL) | |
824 | return -EFAULT; | |
825 | if (pdev->iso_init) | |
826 | return 0; | |
827 | pdev->vsync = 0; | |
828 | udev = pdev->udev; | |
829 | ||
830 | /* Get the current alternate interface, adjust packet size */ | |
831 | if (!udev->actconfig) | |
832 | return -EFAULT; | |
1da177e4 LT |
833 | intf = usb_ifnum_to_if(udev, 0); |
834 | if (intf) | |
835 | idesc = usb_altnum_to_altsetting(intf, pdev->valternate); | |
d56410e0 | 836 | |
1da177e4 LT |
837 | if (!idesc) |
838 | return -EFAULT; | |
839 | ||
840 | /* Search video endpoint */ | |
841 | pdev->vmax_packet_size = -1; | |
2b455db6 | 842 | for (i = 0; i < idesc->desc.bNumEndpoints; i++) { |
1da177e4 LT |
843 | if ((idesc->endpoint[i].desc.bEndpointAddress & 0xF) == pdev->vendpoint) { |
844 | pdev->vmax_packet_size = le16_to_cpu(idesc->endpoint[i].desc.wMaxPacketSize); | |
845 | break; | |
846 | } | |
2b455db6 | 847 | } |
d56410e0 | 848 | |
1da177e4 | 849 | if (pdev->vmax_packet_size < 0 || pdev->vmax_packet_size > ISO_MAX_FRAME_SIZE) { |
2b455db6 | 850 | PWC_ERROR("Failed to find packet size for video endpoint in current alternate setting.\n"); |
093cf723 | 851 | return -ENFILE; /* Odd error, that should be noticeable */ |
1da177e4 LT |
852 | } |
853 | ||
854 | /* Set alternate interface */ | |
855 | ret = 0; | |
2b455db6 | 856 | PWC_DEBUG_OPEN("Setting alternate interface %d\n", pdev->valternate); |
1da177e4 LT |
857 | ret = usb_set_interface(pdev->udev, 0, pdev->valternate); |
858 | if (ret < 0) | |
859 | return ret; | |
860 | ||
861 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
862 | urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); | |
863 | if (urb == NULL) { | |
2b455db6 | 864 | PWC_ERROR("Failed to allocate urb %d\n", i); |
1da177e4 LT |
865 | ret = -ENOMEM; |
866 | break; | |
867 | } | |
868 | pdev->sbuf[i].urb = urb; | |
2b455db6 | 869 | PWC_DEBUG_MEMORY("Allocated URB at 0x%p\n", urb); |
1da177e4 LT |
870 | } |
871 | if (ret) { | |
872 | /* De-allocate in reverse order */ | |
444f4f91 | 873 | while (i--) { |
90b2625a | 874 | usb_free_urb(pdev->sbuf[i].urb); |
1da177e4 | 875 | pdev->sbuf[i].urb = NULL; |
1da177e4 LT |
876 | } |
877 | return ret; | |
878 | } | |
879 | ||
d56410e0 | 880 | /* init URB structure */ |
1da177e4 LT |
881 | for (i = 0; i < MAX_ISO_BUFS; i++) { |
882 | urb = pdev->sbuf[i].urb; | |
883 | ||
884 | urb->interval = 1; // devik | |
885 | urb->dev = udev; | |
d56410e0 | 886 | urb->pipe = usb_rcvisocpipe(udev, pdev->vendpoint); |
1da177e4 | 887 | urb->transfer_flags = URB_ISO_ASAP; |
d56410e0 MCC |
888 | urb->transfer_buffer = pdev->sbuf[i].data; |
889 | urb->transfer_buffer_length = ISO_BUFFER_SIZE; | |
890 | urb->complete = pwc_isoc_handler; | |
891 | urb->context = pdev; | |
1da177e4 LT |
892 | urb->start_frame = 0; |
893 | urb->number_of_packets = ISO_FRAMES_PER_DESC; | |
894 | for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { | |
895 | urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; | |
896 | urb->iso_frame_desc[j].length = pdev->vmax_packet_size; | |
897 | } | |
898 | } | |
899 | ||
900 | /* link */ | |
901 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
902 | ret = usb_submit_urb(pdev->sbuf[i].urb, GFP_KERNEL); | |
903 | if (ret) | |
2b455db6 | 904 | PWC_ERROR("isoc_init() submit_urb %d failed with error %d\n", i, ret); |
1da177e4 | 905 | else |
2b455db6 | 906 | PWC_DEBUG_MEMORY("URB 0x%p submitted.\n", pdev->sbuf[i].urb); |
1da177e4 LT |
907 | } |
908 | ||
909 | /* All is done... */ | |
910 | pdev->iso_init = 1; | |
2b455db6 | 911 | PWC_DEBUG_OPEN("<< pwc_isoc_init()\n"); |
1da177e4 LT |
912 | return 0; |
913 | } | |
914 | ||
0b67f5c5 | 915 | static void pwc_iso_stop(struct pwc_device *pdev) |
1da177e4 LT |
916 | { |
917 | int i; | |
918 | ||
1da177e4 LT |
919 | /* Unlinking ISOC buffers one by one */ |
920 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
921 | struct urb *urb; | |
922 | ||
923 | urb = pdev->sbuf[i].urb; | |
5fa1247a | 924 | if (urb) { |
0b67f5c5 ON |
925 | PWC_DEBUG_MEMORY("Unlinking URB %p\n", urb); |
926 | usb_kill_urb(urb); | |
927 | } | |
928 | } | |
929 | } | |
930 | ||
931 | static void pwc_iso_free(struct pwc_device *pdev) | |
932 | { | |
933 | int i; | |
934 | ||
935 | /* Freeing ISOC buffers one by one */ | |
936 | for (i = 0; i < MAX_ISO_BUFS; i++) { | |
937 | struct urb *urb; | |
938 | ||
939 | urb = pdev->sbuf[i].urb; | |
5fa1247a | 940 | if (urb) { |
2b455db6 | 941 | PWC_DEBUG_MEMORY("Freeing URB\n"); |
1da177e4 LT |
942 | usb_free_urb(urb); |
943 | pdev->sbuf[i].urb = NULL; | |
944 | } | |
945 | } | |
0b67f5c5 ON |
946 | } |
947 | ||
948 | void pwc_isoc_cleanup(struct pwc_device *pdev) | |
949 | { | |
950 | PWC_DEBUG_OPEN(">> pwc_isoc_cleanup()\n"); | |
951 | if (pdev == NULL) | |
952 | return; | |
953 | if (pdev->iso_init == 0) | |
954 | return; | |
955 | ||
956 | pwc_iso_stop(pdev); | |
957 | pwc_iso_free(pdev); | |
1da177e4 LT |
958 | |
959 | /* Stop camera, but only if we are sure the camera is still there (unplug | |
d56410e0 | 960 | is signalled by EPIPE) |
1da177e4 LT |
961 | */ |
962 | if (pdev->error_status && pdev->error_status != EPIPE) { | |
2b455db6 | 963 | PWC_DEBUG_OPEN("Setting alternate interface 0.\n"); |
1da177e4 LT |
964 | usb_set_interface(pdev->udev, 0, 0); |
965 | } | |
966 | ||
967 | pdev->iso_init = 0; | |
2b455db6 | 968 | PWC_DEBUG_OPEN("<< pwc_isoc_cleanup()\n"); |
1da177e4 LT |
969 | } |
970 | ||
971 | int pwc_try_video_mode(struct pwc_device *pdev, int width, int height, int new_fps, int new_compression, int new_snapshot) | |
972 | { | |
973 | int ret, start; | |
974 | ||
975 | /* Stop isoc stuff */ | |
976 | pwc_isoc_cleanup(pdev); | |
977 | /* Reset parameters */ | |
978 | pwc_reset_buffers(pdev); | |
979 | /* Try to set video mode... */ | |
980 | start = ret = pwc_set_video_mode(pdev, width, height, new_fps, new_compression, new_snapshot); | |
d56410e0 | 981 | if (ret) { |
2b455db6 | 982 | PWC_DEBUG_FLOW("pwc_set_video_mode attempt 1 failed.\n"); |
1da177e4 LT |
983 | /* That failed... restore old mode (we know that worked) */ |
984 | start = pwc_set_video_mode(pdev, pdev->view.x, pdev->view.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot); | |
985 | if (start) { | |
2b455db6 | 986 | PWC_DEBUG_FLOW("pwc_set_video_mode attempt 2 failed.\n"); |
1da177e4 LT |
987 | } |
988 | } | |
989 | if (start == 0) | |
990 | { | |
991 | if (pwc_isoc_init(pdev) < 0) | |
992 | { | |
2b455db6 | 993 | PWC_WARNING("Failed to restart ISOC transfers in pwc_try_video_mode.\n"); |
1da177e4 LT |
994 | ret = -EAGAIN; /* let's try again, who knows if it works a second time */ |
995 | } | |
996 | } | |
997 | pdev->drop_frames++; /* try to avoid garbage during switch */ | |
998 | return ret; /* Return original error code */ | |
999 | } | |
1000 | ||
2b455db6 LS |
1001 | /********* |
1002 | * sysfs | |
1003 | *********/ | |
54bd5b66 | 1004 | static struct pwc_device *cd_to_pwc(struct device *cd) |
2b455db6 LS |
1005 | { |
1006 | struct video_device *vdev = to_video_device(cd); | |
1007 | return video_get_drvdata(vdev); | |
1008 | } | |
1009 | ||
54bd5b66 KS |
1010 | static ssize_t show_pan_tilt(struct device *class_dev, |
1011 | struct device_attribute *attr, char *buf) | |
2b455db6 LS |
1012 | { |
1013 | struct pwc_device *pdev = cd_to_pwc(class_dev); | |
1014 | return sprintf(buf, "%d %d\n", pdev->pan_angle, pdev->tilt_angle); | |
1015 | } | |
1016 | ||
54bd5b66 KS |
1017 | static ssize_t store_pan_tilt(struct device *class_dev, |
1018 | struct device_attribute *attr, | |
1019 | const char *buf, size_t count) | |
2b455db6 LS |
1020 | { |
1021 | struct pwc_device *pdev = cd_to_pwc(class_dev); | |
1022 | int pan, tilt; | |
1023 | int ret = -EINVAL; | |
1024 | ||
1025 | if (strncmp(buf, "reset", 5) == 0) | |
1026 | ret = pwc_mpt_reset(pdev, 0x3); | |
1027 | ||
1028 | else if (sscanf(buf, "%d %d", &pan, &tilt) > 0) | |
1029 | ret = pwc_mpt_set_angle(pdev, pan, tilt); | |
1030 | ||
1031 | if (ret < 0) | |
1032 | return ret; | |
1033 | return strlen(buf); | |
1034 | } | |
54bd5b66 KS |
1035 | static DEVICE_ATTR(pan_tilt, S_IRUGO | S_IWUSR, show_pan_tilt, |
1036 | store_pan_tilt); | |
2b455db6 | 1037 | |
54bd5b66 KS |
1038 | static ssize_t show_snapshot_button_status(struct device *class_dev, |
1039 | struct device_attribute *attr, char *buf) | |
2b455db6 LS |
1040 | { |
1041 | struct pwc_device *pdev = cd_to_pwc(class_dev); | |
1042 | int status = pdev->snapshot_button_status; | |
1043 | pdev->snapshot_button_status = 0; | |
1044 | return sprintf(buf, "%d\n", status); | |
1045 | } | |
1046 | ||
54bd5b66 KS |
1047 | static DEVICE_ATTR(button, S_IRUGO | S_IWUSR, show_snapshot_button_status, |
1048 | NULL); | |
2b455db6 | 1049 | |
c12e3be0 | 1050 | static int pwc_create_sysfs_files(struct video_device *vdev) |
2b455db6 LS |
1051 | { |
1052 | struct pwc_device *pdev = video_get_drvdata(vdev); | |
c12e3be0 JG |
1053 | int rc; |
1054 | ||
f894dfd7 | 1055 | rc = device_create_file(&vdev->dev, &dev_attr_button); |
c12e3be0 JG |
1056 | if (rc) |
1057 | goto err; | |
1058 | if (pdev->features & FEATURE_MOTOR_PANTILT) { | |
f894dfd7 | 1059 | rc = device_create_file(&vdev->dev, &dev_attr_pan_tilt); |
c12e3be0 JG |
1060 | if (rc) goto err_button; |
1061 | } | |
1062 | ||
1063 | return 0; | |
1064 | ||
1065 | err_button: | |
f894dfd7 | 1066 | device_remove_file(&vdev->dev, &dev_attr_button); |
c12e3be0 | 1067 | err: |
f894dfd7 | 1068 | PWC_ERROR("Could not create sysfs files.\n"); |
c12e3be0 | 1069 | return rc; |
2b455db6 LS |
1070 | } |
1071 | ||
1072 | static void pwc_remove_sysfs_files(struct video_device *vdev) | |
1073 | { | |
1074 | struct pwc_device *pdev = video_get_drvdata(vdev); | |
1075 | if (pdev->features & FEATURE_MOTOR_PANTILT) | |
f894dfd7 HV |
1076 | device_remove_file(&vdev->dev, &dev_attr_pan_tilt); |
1077 | device_remove_file(&vdev->dev, &dev_attr_button); | |
2b455db6 LS |
1078 | } |
1079 | ||
05ad3907 | 1080 | #ifdef CONFIG_USB_PWC_DEBUG |
2b455db6 LS |
1081 | static const char *pwc_sensor_type_to_string(unsigned int sensor_type) |
1082 | { | |
1083 | switch(sensor_type) { | |
1084 | case 0x00: | |
1085 | return "Hyundai CMOS sensor"; | |
1086 | case 0x20: | |
1087 | return "Sony CCD sensor + TDA8787"; | |
1088 | case 0x2E: | |
1089 | return "Sony CCD sensor + Exas 98L59"; | |
1090 | case 0x2F: | |
1091 | return "Sony CCD sensor + ADI 9804"; | |
1092 | case 0x30: | |
1093 | return "Sharp CCD sensor + TDA8787"; | |
1094 | case 0x3E: | |
1095 | return "Sharp CCD sensor + Exas 98L59"; | |
1096 | case 0x3F: | |
1097 | return "Sharp CCD sensor + ADI 9804"; | |
1098 | case 0x40: | |
1099 | return "UPA 1021 sensor"; | |
1100 | case 0x100: | |
1101 | return "VGA sensor"; | |
1102 | case 0x101: | |
1103 | return "PAL MR sensor"; | |
1104 | default: | |
657de3cd | 1105 | return "unknown type of sensor"; |
2b455db6 LS |
1106 | } |
1107 | } | |
1108 | #endif | |
1da177e4 LT |
1109 | |
1110 | /***************************************************************************/ | |
1111 | /* Video4Linux functions */ | |
1112 | ||
bec43661 | 1113 | static int pwc_video_open(struct file *file) |
1da177e4 | 1114 | { |
2b455db6 | 1115 | int i, ret; |
1da177e4 LT |
1116 | struct video_device *vdev = video_devdata(file); |
1117 | struct pwc_device *pdev; | |
1118 | ||
2b455db6 | 1119 | PWC_DEBUG_OPEN(">> video_open called(vdev = 0x%p).\n", vdev); |
d56410e0 | 1120 | |
601e9444 | 1121 | pdev = video_get_drvdata(vdev); |
5d9a276a | 1122 | BUG_ON(!pdev); |
2b455db6 LS |
1123 | if (pdev->vopen) { |
1124 | PWC_DEBUG_OPEN("I'm busy, someone is using the device.\n"); | |
1da177e4 | 1125 | return -EBUSY; |
2b455db6 | 1126 | } |
d56410e0 | 1127 | |
b9378fdb | 1128 | mutex_lock(&pdev->modlock); |
5c8e2403 | 1129 | pwc_construct(pdev); /* set min/max sizes correct */ |
1da177e4 | 1130 | if (!pdev->usb_init) { |
2b455db6 | 1131 | PWC_DEBUG_OPEN("Doing first time initialization.\n"); |
1da177e4 | 1132 | pdev->usb_init = 1; |
d56410e0 | 1133 | |
2b455db6 LS |
1134 | /* Query sensor type */ |
1135 | ret = pwc_get_cmos_sensor(pdev, &i); | |
1136 | if (ret >= 0) | |
1da177e4 | 1137 | { |
2b455db6 LS |
1138 | PWC_DEBUG_OPEN("This %s camera is equipped with a %s (%d).\n", |
1139 | pdev->vdev->name, | |
1140 | pwc_sensor_type_to_string(i), i); | |
1da177e4 LT |
1141 | } |
1142 | } | |
1143 | ||
1144 | /* Turn on camera */ | |
1145 | if (power_save) { | |
1146 | i = pwc_camera_power(pdev, 1); | |
1147 | if (i < 0) | |
2b455db6 | 1148 | PWC_DEBUG_OPEN("Failed to restore power to the camera! (%d)\n", i); |
1da177e4 LT |
1149 | } |
1150 | /* Set LED on/off time */ | |
1151 | if (pwc_set_leds(pdev, led_on, led_off) < 0) | |
2b455db6 | 1152 | PWC_DEBUG_OPEN("Failed to set LED on/off time.\n"); |
d56410e0 | 1153 | |
1da177e4 LT |
1154 | |
1155 | /* So far, so good. Allocate memory. */ | |
1156 | i = pwc_allocate_buffers(pdev); | |
1157 | if (i < 0) { | |
2b455db6 LS |
1158 | PWC_DEBUG_OPEN("Failed to allocate buffers memory.\n"); |
1159 | pwc_free_buffers(pdev); | |
b9378fdb | 1160 | mutex_unlock(&pdev->modlock); |
1da177e4 LT |
1161 | return i; |
1162 | } | |
d56410e0 | 1163 | |
1da177e4 LT |
1164 | /* Reset buffers & parameters */ |
1165 | pwc_reset_buffers(pdev); | |
2b455db6 | 1166 | for (i = 0; i < pwc_mbufs; i++) |
1da177e4 LT |
1167 | pdev->image_used[i] = 0; |
1168 | pdev->vframe_count = 0; | |
1169 | pdev->vframes_dumped = 0; | |
1170 | pdev->vframes_error = 0; | |
1171 | pdev->visoc_errors = 0; | |
1172 | pdev->error_status = 0; | |
1da177e4 LT |
1173 | pwc_construct(pdev); /* set min/max sizes correct */ |
1174 | ||
1175 | /* Set some defaults */ | |
1176 | pdev->vsnapshot = 0; | |
1177 | ||
1178 | /* Start iso pipe for video; first try the last used video size | |
1179 | (or the default one); if that fails try QCIF/10 or QSIF/10; | |
1180 | it that fails too, give up. | |
1181 | */ | |
1182 | i = pwc_set_video_mode(pdev, pwc_image_sizes[pdev->vsize].x, pwc_image_sizes[pdev->vsize].y, pdev->vframes, pdev->vcompression, 0); | |
1183 | if (i) { | |
2b455db6 LS |
1184 | unsigned int default_resolution; |
1185 | PWC_DEBUG_OPEN("First attempt at set_video_mode failed.\n"); | |
1186 | if (pdev->type>= 730) | |
1187 | default_resolution = PSZ_QSIF; | |
1da177e4 | 1188 | else |
2b455db6 LS |
1189 | default_resolution = PSZ_QCIF; |
1190 | ||
1191 | i = pwc_set_video_mode(pdev, | |
1192 | pwc_image_sizes[default_resolution].x, | |
1193 | pwc_image_sizes[default_resolution].y, | |
1194 | 10, | |
1195 | pdev->vcompression, | |
1196 | 0); | |
1da177e4 LT |
1197 | } |
1198 | if (i) { | |
2b455db6 LS |
1199 | PWC_DEBUG_OPEN("Second attempt at set_video_mode failed.\n"); |
1200 | pwc_free_buffers(pdev); | |
b9378fdb | 1201 | mutex_unlock(&pdev->modlock); |
1da177e4 LT |
1202 | return i; |
1203 | } | |
d56410e0 | 1204 | |
1da177e4 LT |
1205 | i = pwc_isoc_init(pdev); |
1206 | if (i) { | |
2b455db6 LS |
1207 | PWC_DEBUG_OPEN("Failed to init ISOC stuff = %d.\n", i); |
1208 | pwc_isoc_cleanup(pdev); | |
1209 | pwc_free_buffers(pdev); | |
b9378fdb | 1210 | mutex_unlock(&pdev->modlock); |
1da177e4 LT |
1211 | return i; |
1212 | } | |
1213 | ||
2b455db6 LS |
1214 | /* Initialize the webcam to sane value */ |
1215 | pwc_set_brightness(pdev, 0x7fff); | |
1216 | pwc_set_agc(pdev, 1, 0); | |
1217 | ||
1da177e4 LT |
1218 | pdev->vopen++; |
1219 | file->private_data = vdev; | |
b9378fdb | 1220 | mutex_unlock(&pdev->modlock); |
2b455db6 | 1221 | PWC_DEBUG_OPEN("<< video_open() returns 0.\n"); |
1da177e4 LT |
1222 | return 0; |
1223 | } | |
1224 | ||
85237f20 ON |
1225 | |
1226 | static void pwc_cleanup(struct pwc_device *pdev) | |
1227 | { | |
1228 | pwc_remove_sysfs_files(pdev->vdev); | |
1229 | video_unregister_device(pdev->vdev); | |
e32a7ecc NPT |
1230 | |
1231 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV | |
1232 | if (pdev->button_dev) { | |
1233 | input_unregister_device(pdev->button_dev); | |
1234 | input_free_device(pdev->button_dev); | |
1235 | kfree(pdev->button_dev->phys); | |
1236 | pdev->button_dev = NULL; | |
1237 | } | |
1238 | #endif | |
85237f20 ON |
1239 | } |
1240 | ||
1da177e4 | 1241 | /* Note that all cleanup is done in the reverse order as in _open */ |
bec43661 | 1242 | static int pwc_video_close(struct file *file) |
1da177e4 LT |
1243 | { |
1244 | struct video_device *vdev = file->private_data; | |
1245 | struct pwc_device *pdev; | |
85237f20 | 1246 | int i, hint; |
1da177e4 | 1247 | |
2b455db6 | 1248 | PWC_DEBUG_OPEN(">> video_close called(vdev = 0x%p).\n", vdev); |
1da177e4 | 1249 | |
0b67f5c5 | 1250 | lock_kernel(); |
601e9444 | 1251 | pdev = video_get_drvdata(vdev); |
1da177e4 | 1252 | if (pdev->vopen == 0) |
2b455db6 | 1253 | PWC_DEBUG_MODULE("video_close() called on closed device?\n"); |
1da177e4 LT |
1254 | |
1255 | /* Dump statistics, but only if a reasonable amount of frames were | |
1256 | processed (to prevent endless log-entries in case of snap-shot | |
1257 | programs) | |
1258 | */ | |
1259 | if (pdev->vframe_count > 20) | |
2b455db6 | 1260 | PWC_DEBUG_MODULE("Closing video device: %d frames received, dumped %d frames, %d frames with errors.\n", pdev->vframe_count, pdev->vframes_dumped, pdev->vframes_error); |
1da177e4 | 1261 | |
2b455db6 LS |
1262 | if (DEVICE_USE_CODEC1(pdev->type)) |
1263 | pwc_dec1_exit(); | |
1264 | else | |
1265 | pwc_dec23_exit(); | |
1da177e4 LT |
1266 | |
1267 | pwc_isoc_cleanup(pdev); | |
1268 | pwc_free_buffers(pdev); | |
1269 | ||
1270 | /* Turn off LEDS and power down camera, but only when not unplugged */ | |
85237f20 | 1271 | if (!pdev->unplugged) { |
1da177e4 LT |
1272 | /* Turn LEDs off */ |
1273 | if (pwc_set_leds(pdev, 0, 0) < 0) | |
2b455db6 | 1274 | PWC_DEBUG_MODULE("Failed to set LED on/off time.\n"); |
1da177e4 LT |
1275 | if (power_save) { |
1276 | i = pwc_camera_power(pdev, 0); | |
1277 | if (i < 0) | |
2b455db6 | 1278 | PWC_ERROR("Failed to power down camera (%d)\n", i); |
1da177e4 | 1279 | } |
85237f20 | 1280 | pdev->vopen--; |
7b9fbc3e | 1281 | PWC_DEBUG_OPEN("<< video_close() vopen=%d\n", pdev->vopen); |
85237f20 ON |
1282 | } else { |
1283 | pwc_cleanup(pdev); | |
1284 | /* Free memory (don't set pdev to 0 just yet) */ | |
1285 | kfree(pdev); | |
1286 | /* search device_hint[] table if we occupy a slot, by any chance */ | |
1287 | for (hint = 0; hint < MAX_DEV_HINTS; hint++) | |
1288 | if (device_hint[hint].pdev == pdev) | |
1289 | device_hint[hint].pdev = NULL; | |
1da177e4 | 1290 | } |
85237f20 ON |
1291 | unlock_kernel(); |
1292 | ||
1da177e4 LT |
1293 | return 0; |
1294 | } | |
1295 | ||
1296 | /* | |
1297 | * FIXME: what about two parallel reads ???? | |
1298 | * ANSWER: Not supported. You can't open the device more than once, | |
d56410e0 MCC |
1299 | despite what the V4L1 interface says. First, I don't see |
1300 | the need, second there's no mechanism of alerting the | |
1301 | 2nd/3rd/... process of events like changing image size. | |
1302 | And I don't see the point of blocking that for the | |
1303 | 2nd/3rd/... process. | |
1304 | In multi-threaded environments reading parallel from any | |
1305 | device is tricky anyhow. | |
1da177e4 LT |
1306 | */ |
1307 | ||
2b455db6 | 1308 | static ssize_t pwc_video_read(struct file *file, char __user *buf, |
1da177e4 LT |
1309 | size_t count, loff_t *ppos) |
1310 | { | |
1311 | struct video_device *vdev = file->private_data; | |
1312 | struct pwc_device *pdev; | |
1313 | int noblock = file->f_flags & O_NONBLOCK; | |
1314 | DECLARE_WAITQUEUE(wait, current); | |
0b67f5c5 | 1315 | int bytes_to_read, rv = 0; |
2b455db6 | 1316 | void *image_buffer_addr; |
1da177e4 | 1317 | |
2b455db6 LS |
1318 | PWC_DEBUG_READ("pwc_video_read(vdev=0x%p, buf=%p, count=%zd) called.\n", |
1319 | vdev, buf, count); | |
1da177e4 LT |
1320 | if (vdev == NULL) |
1321 | return -EFAULT; | |
601e9444 | 1322 | pdev = video_get_drvdata(vdev); |
1da177e4 LT |
1323 | if (pdev == NULL) |
1324 | return -EFAULT; | |
0b67f5c5 ON |
1325 | |
1326 | mutex_lock(&pdev->modlock); | |
1327 | if (pdev->error_status) { | |
1328 | rv = -pdev->error_status; /* Something happened, report what. */ | |
1329 | goto err_out; | |
1330 | } | |
1da177e4 LT |
1331 | |
1332 | /* In case we're doing partial reads, we don't have to wait for a frame */ | |
1333 | if (pdev->image_read_pos == 0) { | |
1334 | /* Do wait queueing according to the (doc)book */ | |
1335 | add_wait_queue(&pdev->frameq, &wait); | |
1336 | while (pdev->full_frames == NULL) { | |
1337 | /* Check for unplugged/etc. here */ | |
1338 | if (pdev->error_status) { | |
1339 | remove_wait_queue(&pdev->frameq, &wait); | |
1340 | set_current_state(TASK_RUNNING); | |
0b67f5c5 ON |
1341 | rv = -pdev->error_status ; |
1342 | goto err_out; | |
1da177e4 | 1343 | } |
d56410e0 MCC |
1344 | if (noblock) { |
1345 | remove_wait_queue(&pdev->frameq, &wait); | |
1346 | set_current_state(TASK_RUNNING); | |
0b67f5c5 ON |
1347 | rv = -EWOULDBLOCK; |
1348 | goto err_out; | |
d56410e0 MCC |
1349 | } |
1350 | if (signal_pending(current)) { | |
1351 | remove_wait_queue(&pdev->frameq, &wait); | |
1352 | set_current_state(TASK_RUNNING); | |
0b67f5c5 ON |
1353 | rv = -ERESTARTSYS; |
1354 | goto err_out; | |
d56410e0 MCC |
1355 | } |
1356 | schedule(); | |
1357 | set_current_state(TASK_INTERRUPTIBLE); | |
1da177e4 LT |
1358 | } |
1359 | remove_wait_queue(&pdev->frameq, &wait); | |
1360 | set_current_state(TASK_RUNNING); | |
d56410e0 | 1361 | |
1da177e4 | 1362 | /* Decompress and release frame */ |
0b67f5c5 ON |
1363 | if (pwc_handle_frame(pdev)) { |
1364 | rv = -EFAULT; | |
1365 | goto err_out; | |
1366 | } | |
1da177e4 LT |
1367 | } |
1368 | ||
2b455db6 | 1369 | PWC_DEBUG_READ("Copying data to user space.\n"); |
1da177e4 | 1370 | if (pdev->vpalette == VIDEO_PALETTE_RAW) |
2b455db6 | 1371 | bytes_to_read = pdev->frame_size + sizeof(struct pwc_raw_frame); |
1da177e4 | 1372 | else |
d56410e0 | 1373 | bytes_to_read = pdev->view.size; |
1da177e4 LT |
1374 | |
1375 | /* copy bytes to user space; we allow for partial reads */ | |
1376 | if (count + pdev->image_read_pos > bytes_to_read) | |
1377 | count = bytes_to_read - pdev->image_read_pos; | |
2b455db6 LS |
1378 | image_buffer_addr = pdev->image_data; |
1379 | image_buffer_addr += pdev->images[pdev->fill_image].offset; | |
1380 | image_buffer_addr += pdev->image_read_pos; | |
0b67f5c5 ON |
1381 | if (copy_to_user(buf, image_buffer_addr, count)) { |
1382 | rv = -EFAULT; | |
1383 | goto err_out; | |
1384 | } | |
1da177e4 LT |
1385 | pdev->image_read_pos += count; |
1386 | if (pdev->image_read_pos >= bytes_to_read) { /* All data has been read */ | |
1387 | pdev->image_read_pos = 0; | |
1388 | pwc_next_image(pdev); | |
1389 | } | |
0b67f5c5 | 1390 | mutex_unlock(&pdev->modlock); |
1da177e4 | 1391 | return count; |
0b67f5c5 ON |
1392 | err_out: |
1393 | mutex_unlock(&pdev->modlock); | |
1394 | return rv; | |
1da177e4 LT |
1395 | } |
1396 | ||
1397 | static unsigned int pwc_video_poll(struct file *file, poll_table *wait) | |
1398 | { | |
1399 | struct video_device *vdev = file->private_data; | |
1400 | struct pwc_device *pdev; | |
1401 | ||
1402 | if (vdev == NULL) | |
1403 | return -EFAULT; | |
601e9444 | 1404 | pdev = video_get_drvdata(vdev); |
1da177e4 LT |
1405 | if (pdev == NULL) |
1406 | return -EFAULT; | |
1407 | ||
1408 | poll_wait(file, &pdev->frameq, wait); | |
1409 | if (pdev->error_status) | |
1410 | return POLLERR; | |
1411 | if (pdev->full_frames != NULL) /* we have frames waiting */ | |
1412 | return (POLLIN | POLLRDNORM); | |
1413 | ||
1414 | return 0; | |
1415 | } | |
1416 | ||
069b7479 | 1417 | static long pwc_video_ioctl(struct file *file, |
1da177e4 LT |
1418 | unsigned int cmd, unsigned long arg) |
1419 | { | |
0b67f5c5 ON |
1420 | struct video_device *vdev = file->private_data; |
1421 | struct pwc_device *pdev; | |
069b7479 | 1422 | long r = -ENODEV; |
0b67f5c5 ON |
1423 | |
1424 | if (!vdev) | |
1425 | goto out; | |
601e9444 | 1426 | pdev = video_get_drvdata(vdev); |
0b67f5c5 ON |
1427 | |
1428 | mutex_lock(&pdev->modlock); | |
1429 | if (!pdev->unplugged) | |
f473bf76 | 1430 | r = video_usercopy(file, cmd, arg, pwc_video_do_ioctl); |
0b67f5c5 ON |
1431 | mutex_unlock(&pdev->modlock); |
1432 | out: | |
1433 | return r; | |
1da177e4 LT |
1434 | } |
1435 | ||
1da177e4 LT |
1436 | static int pwc_video_mmap(struct file *file, struct vm_area_struct *vma) |
1437 | { | |
1438 | struct video_device *vdev = file->private_data; | |
1439 | struct pwc_device *pdev; | |
2b455db6 LS |
1440 | unsigned long start; |
1441 | unsigned long size; | |
1442 | unsigned long page, pos = 0; | |
1443 | int index; | |
d56410e0 | 1444 | |
645635b0 | 1445 | PWC_DEBUG_MEMORY(">> %s\n", __func__); |
601e9444 | 1446 | pdev = video_get_drvdata(vdev); |
2b455db6 LS |
1447 | size = vma->vm_end - vma->vm_start; |
1448 | start = vma->vm_start; | |
d56410e0 | 1449 | |
2b455db6 LS |
1450 | /* Find the idx buffer for this mapping */ |
1451 | for (index = 0; index < pwc_mbufs; index++) { | |
1452 | pos = pdev->images[index].offset; | |
1453 | if ((pos>>PAGE_SHIFT) == vma->vm_pgoff) | |
1454 | break; | |
1455 | } | |
1456 | if (index == MAX_IMAGES) | |
1457 | return -EINVAL; | |
1458 | if (index == 0) { | |
1459 | /* | |
1460 | * Special case for v4l1. In v4l1, we map only one big buffer, | |
1461 | * but in v4l2 each buffer is mapped | |
1462 | */ | |
1463 | unsigned long total_size; | |
1464 | total_size = pwc_mbufs * pdev->len_per_image; | |
1465 | if (size != pdev->len_per_image && size != total_size) { | |
1466 | PWC_ERROR("Wrong size (%lu) needed to be len_per_image=%d or total_size=%lu\n", | |
1467 | size, pdev->len_per_image, total_size); | |
1468 | return -EINVAL; | |
1469 | } | |
1470 | } else if (size > pdev->len_per_image) | |
1471 | return -EINVAL; | |
1472 | ||
1473 | vma->vm_flags |= VM_IO; /* from 2.6.9-acX */ | |
1da177e4 | 1474 | |
2b455db6 | 1475 | pos += (unsigned long)pdev->image_data; |
1da177e4 LT |
1476 | while (size > 0) { |
1477 | page = vmalloc_to_pfn((void *)pos); | |
1478 | if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) | |
1479 | return -EAGAIN; | |
1da177e4 LT |
1480 | start += PAGE_SIZE; |
1481 | pos += PAGE_SIZE; | |
1482 | if (size > PAGE_SIZE) | |
1483 | size -= PAGE_SIZE; | |
1484 | else | |
1485 | size = 0; | |
1486 | } | |
1da177e4 LT |
1487 | return 0; |
1488 | } | |
1489 | ||
1490 | /***************************************************************************/ | |
1491 | /* USB functions */ | |
1492 | ||
1493 | /* This function gets called when a new device is plugged in or the usb core | |
1494 | * is loaded. | |
1495 | */ | |
1496 | ||
1497 | static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
1498 | { | |
1499 | struct usb_device *udev = interface_to_usbdev(intf); | |
1500 | struct pwc_device *pdev = NULL; | |
1501 | int vendor_id, product_id, type_id; | |
c12e3be0 | 1502 | int i, hint, rc; |
1da177e4 LT |
1503 | int features = 0; |
1504 | int video_nr = -1; /* default: use next available device */ | |
1505 | char serial_number[30], *name; | |
e32a7ecc NPT |
1506 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
1507 | char *phys = NULL; | |
1508 | #endif | |
1da177e4 | 1509 | |
2b455db6 LS |
1510 | vendor_id = le16_to_cpu(udev->descriptor.idVendor); |
1511 | product_id = le16_to_cpu(udev->descriptor.idProduct); | |
1512 | ||
1da177e4 | 1513 | /* Check if we can handle this device */ |
2b455db6 LS |
1514 | PWC_DEBUG_PROBE("probe() called [%04X %04X], if %d\n", |
1515 | vendor_id, product_id, | |
1da177e4 LT |
1516 | intf->altsetting->desc.bInterfaceNumber); |
1517 | ||
1518 | /* the interfaces are probed one by one. We are only interested in the | |
1519 | video interface (0) now. | |
1520 | Interface 1 is the Audio Control, and interface 2 Audio itself. | |
1521 | */ | |
1522 | if (intf->altsetting->desc.bInterfaceNumber > 0) | |
1523 | return -ENODEV; | |
1524 | ||
1da177e4 LT |
1525 | if (vendor_id == 0x0471) { |
1526 | switch (product_id) { | |
1527 | case 0x0302: | |
2b455db6 | 1528 | PWC_INFO("Philips PCA645VC USB webcam detected.\n"); |
1da177e4 LT |
1529 | name = "Philips 645 webcam"; |
1530 | type_id = 645; | |
1531 | break; | |
1532 | case 0x0303: | |
2b455db6 | 1533 | PWC_INFO("Philips PCA646VC USB webcam detected.\n"); |
1da177e4 LT |
1534 | name = "Philips 646 webcam"; |
1535 | type_id = 646; | |
1536 | break; | |
1537 | case 0x0304: | |
2b455db6 | 1538 | PWC_INFO("Askey VC010 type 2 USB webcam detected.\n"); |
1da177e4 LT |
1539 | name = "Askey VC010 webcam"; |
1540 | type_id = 646; | |
1541 | break; | |
1542 | case 0x0307: | |
2b455db6 | 1543 | PWC_INFO("Philips PCVC675K (Vesta) USB webcam detected.\n"); |
1da177e4 LT |
1544 | name = "Philips 675 webcam"; |
1545 | type_id = 675; | |
1546 | break; | |
1547 | case 0x0308: | |
2b455db6 | 1548 | PWC_INFO("Philips PCVC680K (Vesta Pro) USB webcam detected.\n"); |
1da177e4 LT |
1549 | name = "Philips 680 webcam"; |
1550 | type_id = 680; | |
1551 | break; | |
1552 | case 0x030C: | |
2b455db6 | 1553 | PWC_INFO("Philips PCVC690K (Vesta Pro Scan) USB webcam detected.\n"); |
1da177e4 LT |
1554 | name = "Philips 690 webcam"; |
1555 | type_id = 690; | |
1556 | break; | |
1557 | case 0x0310: | |
2b455db6 | 1558 | PWC_INFO("Philips PCVC730K (ToUCam Fun)/PCVC830 (ToUCam II) USB webcam detected.\n"); |
1da177e4 LT |
1559 | name = "Philips 730 webcam"; |
1560 | type_id = 730; | |
1561 | break; | |
1562 | case 0x0311: | |
2b455db6 | 1563 | PWC_INFO("Philips PCVC740K (ToUCam Pro)/PCVC840 (ToUCam II) USB webcam detected.\n"); |
1da177e4 LT |
1564 | name = "Philips 740 webcam"; |
1565 | type_id = 740; | |
1566 | break; | |
1567 | case 0x0312: | |
2b455db6 | 1568 | PWC_INFO("Philips PCVC750K (ToUCam Pro Scan) USB webcam detected.\n"); |
1da177e4 LT |
1569 | name = "Philips 750 webcam"; |
1570 | type_id = 750; | |
1571 | break; | |
1572 | case 0x0313: | |
2b455db6 | 1573 | PWC_INFO("Philips PCVC720K/40 (ToUCam XS) USB webcam detected.\n"); |
1da177e4 LT |
1574 | name = "Philips 720K/40 webcam"; |
1575 | type_id = 720; | |
1576 | break; | |
2b455db6 LS |
1577 | case 0x0329: |
1578 | PWC_INFO("Philips SPC 900NC USB webcam detected.\n"); | |
1579 | name = "Philips SPC 900NC webcam"; | |
9ee6d78c | 1580 | type_id = 740; |
2b455db6 | 1581 | break; |
1da177e4 LT |
1582 | default: |
1583 | return -ENODEV; | |
1584 | break; | |
1585 | } | |
1586 | } | |
1587 | else if (vendor_id == 0x069A) { | |
1588 | switch(product_id) { | |
1589 | case 0x0001: | |
2b455db6 | 1590 | PWC_INFO("Askey VC010 type 1 USB webcam detected.\n"); |
1da177e4 LT |
1591 | name = "Askey VC010 webcam"; |
1592 | type_id = 645; | |
1593 | break; | |
1594 | default: | |
1595 | return -ENODEV; | |
1596 | break; | |
1597 | } | |
1598 | } | |
1599 | else if (vendor_id == 0x046d) { | |
1600 | switch(product_id) { | |
1601 | case 0x08b0: | |
2b455db6 | 1602 | PWC_INFO("Logitech QuickCam Pro 3000 USB webcam detected.\n"); |
1da177e4 LT |
1603 | name = "Logitech QuickCam Pro 3000"; |
1604 | type_id = 740; /* CCD sensor */ | |
1605 | break; | |
1606 | case 0x08b1: | |
2b455db6 | 1607 | PWC_INFO("Logitech QuickCam Notebook Pro USB webcam detected.\n"); |
1da177e4 LT |
1608 | name = "Logitech QuickCam Notebook Pro"; |
1609 | type_id = 740; /* CCD sensor */ | |
1610 | break; | |
1611 | case 0x08b2: | |
2b455db6 | 1612 | PWC_INFO("Logitech QuickCam 4000 Pro USB webcam detected.\n"); |
1da177e4 LT |
1613 | name = "Logitech QuickCam Pro 4000"; |
1614 | type_id = 740; /* CCD sensor */ | |
1615 | break; | |
1616 | case 0x08b3: | |
2b455db6 | 1617 | PWC_INFO("Logitech QuickCam Zoom USB webcam detected.\n"); |
1da177e4 LT |
1618 | name = "Logitech QuickCam Zoom"; |
1619 | type_id = 740; /* CCD sensor */ | |
1620 | break; | |
1621 | case 0x08B4: | |
2b455db6 | 1622 | PWC_INFO("Logitech QuickCam Zoom (new model) USB webcam detected.\n"); |
1da177e4 LT |
1623 | name = "Logitech QuickCam Zoom"; |
1624 | type_id = 740; /* CCD sensor */ | |
2b455db6 | 1625 | power_save = 1; |
1da177e4 LT |
1626 | break; |
1627 | case 0x08b5: | |
2b455db6 | 1628 | PWC_INFO("Logitech QuickCam Orbit/Sphere USB webcam detected.\n"); |
1da177e4 LT |
1629 | name = "Logitech QuickCam Orbit"; |
1630 | type_id = 740; /* CCD sensor */ | |
1631 | features |= FEATURE_MOTOR_PANTILT; | |
1632 | break; | |
1633 | case 0x08b6: | |
a63e157f JT |
1634 | PWC_INFO("Logitech/Cisco VT Camera webcam detected.\n"); |
1635 | name = "Cisco VT Camera"; | |
1636 | type_id = 740; /* CCD sensor */ | |
1637 | break; | |
1da177e4 | 1638 | case 0x08b7: |
6b1ce3c1 MCC |
1639 | PWC_INFO("Logitech ViewPort AV 100 webcam detected.\n"); |
1640 | name = "Logitech ViewPort AV 100"; | |
1641 | type_id = 740; /* CCD sensor */ | |
1642 | break; | |
1643 | case 0x08b8: /* Where this released? */ | |
2b455db6 | 1644 | PWC_INFO("Logitech QuickCam detected (reserved ID).\n"); |
1da177e4 LT |
1645 | name = "Logitech QuickCam (res.)"; |
1646 | type_id = 730; /* Assuming CMOS */ | |
1647 | break; | |
d56410e0 | 1648 | default: |
1da177e4 | 1649 | return -ENODEV; |
d56410e0 MCC |
1650 | break; |
1651 | } | |
1652 | } | |
1da177e4 LT |
1653 | else if (vendor_id == 0x055d) { |
1654 | /* I don't know the difference between the C10 and the C30; | |
1655 | I suppose the difference is the sensor, but both cameras | |
1656 | work equally well with a type_id of 675 | |
1657 | */ | |
1658 | switch(product_id) { | |
1659 | case 0x9000: | |
2b455db6 | 1660 | PWC_INFO("Samsung MPC-C10 USB webcam detected.\n"); |
1da177e4 LT |
1661 | name = "Samsung MPC-C10"; |
1662 | type_id = 675; | |
1663 | break; | |
1664 | case 0x9001: | |
2b455db6 | 1665 | PWC_INFO("Samsung MPC-C30 USB webcam detected.\n"); |
1da177e4 LT |
1666 | name = "Samsung MPC-C30"; |
1667 | type_id = 675; | |
1668 | break; | |
2b455db6 LS |
1669 | case 0x9002: |
1670 | PWC_INFO("Samsung SNC-35E (v3.0) USB webcam detected.\n"); | |
1671 | name = "Samsung MPC-C30"; | |
1672 | type_id = 740; | |
1673 | break; | |
1da177e4 LT |
1674 | default: |
1675 | return -ENODEV; | |
1676 | break; | |
1677 | } | |
1678 | } | |
1679 | else if (vendor_id == 0x041e) { | |
1680 | switch(product_id) { | |
1681 | case 0x400c: | |
2b455db6 | 1682 | PWC_INFO("Creative Labs Webcam 5 detected.\n"); |
1da177e4 LT |
1683 | name = "Creative Labs Webcam 5"; |
1684 | type_id = 730; | |
1685 | break; | |
1686 | case 0x4011: | |
2b455db6 | 1687 | PWC_INFO("Creative Labs Webcam Pro Ex detected.\n"); |
1da177e4 LT |
1688 | name = "Creative Labs Webcam Pro Ex"; |
1689 | type_id = 740; | |
1690 | break; | |
1691 | default: | |
1692 | return -ENODEV; | |
1693 | break; | |
1694 | } | |
1695 | } | |
1696 | else if (vendor_id == 0x04cc) { | |
1697 | switch(product_id) { | |
1698 | case 0x8116: | |
2b455db6 | 1699 | PWC_INFO("Sotec Afina Eye USB webcam detected.\n"); |
1da177e4 LT |
1700 | name = "Sotec Afina Eye"; |
1701 | type_id = 730; | |
1702 | break; | |
1703 | default: | |
1704 | return -ENODEV; | |
1705 | break; | |
1706 | } | |
1707 | } | |
1708 | else if (vendor_id == 0x06be) { | |
1709 | switch(product_id) { | |
1710 | case 0x8116: | |
1711 | /* This is essentially the same cam as the Sotec Afina Eye */ | |
2b455db6 | 1712 | PWC_INFO("AME Co. Afina Eye USB webcam detected.\n"); |
1da177e4 LT |
1713 | name = "AME Co. Afina Eye"; |
1714 | type_id = 750; | |
1715 | break; | |
1716 | default: | |
1717 | return -ENODEV; | |
1718 | break; | |
1719 | } | |
d56410e0 | 1720 | |
1da177e4 LT |
1721 | } |
1722 | else if (vendor_id == 0x0d81) { | |
1723 | switch(product_id) { | |
1724 | case 0x1900: | |
2b455db6 | 1725 | PWC_INFO("Visionite VCS-UC300 USB webcam detected.\n"); |
1da177e4 LT |
1726 | name = "Visionite VCS-UC300"; |
1727 | type_id = 740; /* CCD sensor */ | |
1728 | break; | |
1729 | case 0x1910: | |
2b455db6 | 1730 | PWC_INFO("Visionite VCS-UM100 USB webcam detected.\n"); |
1da177e4 LT |
1731 | name = "Visionite VCS-UM100"; |
1732 | type_id = 730; /* CMOS sensor */ | |
1733 | break; | |
1734 | default: | |
1735 | return -ENODEV; | |
1736 | break; | |
1737 | } | |
1738 | } | |
d56410e0 | 1739 | else |
1da177e4 LT |
1740 | return -ENODEV; /* Not any of the know types; but the list keeps growing. */ |
1741 | ||
1742 | memset(serial_number, 0, 30); | |
1743 | usb_string(udev, udev->descriptor.iSerialNumber, serial_number, 29); | |
2b455db6 | 1744 | PWC_DEBUG_PROBE("Device serial number is %s\n", serial_number); |
1da177e4 LT |
1745 | |
1746 | if (udev->descriptor.bNumConfigurations > 1) | |
2b455db6 | 1747 | PWC_WARNING("Warning: more than 1 configuration available.\n"); |
1da177e4 LT |
1748 | |
1749 | /* Allocate structure, initialize pointers, mutexes, etc. and link it to the usb_device */ | |
80b6ca48 | 1750 | pdev = kzalloc(sizeof(struct pwc_device), GFP_KERNEL); |
1da177e4 | 1751 | if (pdev == NULL) { |
2b455db6 | 1752 | PWC_ERROR("Oops, could not allocate memory for pwc_device.\n"); |
1da177e4 LT |
1753 | return -ENOMEM; |
1754 | } | |
1da177e4 LT |
1755 | pdev->type = type_id; |
1756 | pdev->vsize = default_size; | |
1757 | pdev->vframes = default_fps; | |
1758 | strcpy(pdev->serial, serial_number); | |
1759 | pdev->features = features; | |
1760 | if (vendor_id == 0x046D && product_id == 0x08B5) | |
1761 | { | |
1762 | /* Logitech QuickCam Orbit | |
d56410e0 MCC |
1763 | The ranges have been determined experimentally; they may differ from cam to cam. |
1764 | Also, the exact ranges left-right and up-down are different for my cam | |
1765 | */ | |
1da177e4 LT |
1766 | pdev->angle_range.pan_min = -7000; |
1767 | pdev->angle_range.pan_max = 7000; | |
1768 | pdev->angle_range.tilt_min = -3000; | |
1769 | pdev->angle_range.tilt_max = 2500; | |
1770 | } | |
1771 | ||
b9378fdb | 1772 | mutex_init(&pdev->modlock); |
1da177e4 LT |
1773 | spin_lock_init(&pdev->ptrlock); |
1774 | ||
1775 | pdev->udev = udev; | |
1776 | init_waitqueue_head(&pdev->frameq); | |
1777 | pdev->vcompression = pwc_preferred_compression; | |
1778 | ||
1779 | /* Allocate video_device structure */ | |
1780 | pdev->vdev = video_device_alloc(); | |
5fa1247a | 1781 | if (!pdev->vdev) { |
2b455db6 | 1782 | PWC_ERROR("Err, cannot allocate video_device struture. Failing probe."); |
1da177e4 LT |
1783 | kfree(pdev); |
1784 | return -ENOMEM; | |
1785 | } | |
1786 | memcpy(pdev->vdev, &pwc_template, sizeof(pwc_template)); | |
52a85e17 | 1787 | pdev->vdev->parent = &intf->dev; |
1da177e4 | 1788 | strcpy(pdev->vdev->name, name); |
1da177e4 LT |
1789 | video_set_drvdata(pdev->vdev, pdev); |
1790 | ||
1791 | pdev->release = le16_to_cpu(udev->descriptor.bcdDevice); | |
2b455db6 | 1792 | PWC_DEBUG_PROBE("Release: %04x\n", pdev->release); |
1da177e4 LT |
1793 | |
1794 | /* Now search device_hint[] table for a match, so we can hint a node number. */ | |
1795 | for (hint = 0; hint < MAX_DEV_HINTS; hint++) { | |
1796 | if (((device_hint[hint].type == -1) || (device_hint[hint].type == pdev->type)) && | |
1797 | (device_hint[hint].pdev == NULL)) { | |
1798 | /* so far, so good... try serial number */ | |
1799 | if ((device_hint[hint].serial_number[0] == '*') || !strcmp(device_hint[hint].serial_number, serial_number)) { | |
657de3cd TP |
1800 | /* match! */ |
1801 | video_nr = device_hint[hint].device_node; | |
1802 | PWC_DEBUG_PROBE("Found hint, will try to register as /dev/video%d\n", video_nr); | |
1803 | break; | |
1da177e4 LT |
1804 | } |
1805 | } | |
1806 | } | |
1807 | ||
1808 | pdev->vdev->release = video_device_release; | |
1809 | i = video_register_device(pdev->vdev, VFL_TYPE_GRABBER, video_nr); | |
1810 | if (i < 0) { | |
2b455db6 | 1811 | PWC_ERROR("Failed to register as video device (%d).\n", i); |
c12e3be0 JG |
1812 | rc = i; |
1813 | goto err; | |
1da177e4 LT |
1814 | } |
1815 | else { | |
c6330fb8 | 1816 | PWC_INFO("Registered as /dev/video%d.\n", pdev->vdev->num); |
1da177e4 LT |
1817 | } |
1818 | ||
1819 | /* occupy slot */ | |
d56410e0 | 1820 | if (hint < MAX_DEV_HINTS) |
1da177e4 LT |
1821 | device_hint[hint].pdev = pdev; |
1822 | ||
2b455db6 | 1823 | PWC_DEBUG_PROBE("probe() function returning struct at 0x%p.\n", pdev); |
1da177e4 | 1824 | usb_set_intfdata (intf, pdev); |
c12e3be0 JG |
1825 | rc = pwc_create_sysfs_files(pdev->vdev); |
1826 | if (rc) | |
1827 | goto err_unreg; | |
2b455db6 LS |
1828 | |
1829 | /* Set the leds off */ | |
1830 | pwc_set_leds(pdev, 0, 0); | |
1831 | pwc_camera_power(pdev, 0); | |
1832 | ||
e32a7ecc NPT |
1833 | #ifdef CONFIG_USB_PWC_INPUT_EVDEV |
1834 | /* register webcam snapshot button input device */ | |
1835 | pdev->button_dev = input_allocate_device(); | |
1836 | if (!pdev->button_dev) { | |
1837 | PWC_ERROR("Err, insufficient memory for webcam snapshot button device."); | |
1838 | return -ENOMEM; | |
1839 | } | |
1840 | ||
1841 | pdev->button_dev->name = "PWC snapshot button"; | |
1842 | phys = kasprintf(GFP_KERNEL,"usb-%s-%s", pdev->udev->bus->bus_name, pdev->udev->devpath); | |
1843 | if (!phys) { | |
1844 | input_free_device(pdev->button_dev); | |
1845 | return -ENOMEM; | |
1846 | } | |
1847 | pdev->button_dev->phys = phys; | |
1848 | usb_to_input_id(pdev->udev, &pdev->button_dev->id); | |
1849 | pdev->button_dev->dev.parent = &pdev->udev->dev; | |
1850 | pdev->button_dev->evbit[0] = BIT_MASK(EV_KEY); | |
bcd3e4b3 | 1851 | pdev->button_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA); |
e32a7ecc NPT |
1852 | |
1853 | rc = input_register_device(pdev->button_dev); | |
1854 | if (rc) { | |
1855 | input_free_device(pdev->button_dev); | |
1856 | kfree(pdev->button_dev->phys); | |
1857 | pdev->button_dev = NULL; | |
1858 | return rc; | |
1859 | } | |
1860 | #endif | |
1861 | ||
1da177e4 | 1862 | return 0; |
c12e3be0 JG |
1863 | |
1864 | err_unreg: | |
1865 | if (hint < MAX_DEV_HINTS) | |
1866 | device_hint[hint].pdev = NULL; | |
1867 | video_unregister_device(pdev->vdev); | |
1868 | err: | |
1869 | video_device_release(pdev->vdev); /* Drip... drip... drip... */ | |
1870 | kfree(pdev); /* Oops, no memory leaks please */ | |
1871 | return rc; | |
1da177e4 LT |
1872 | } |
1873 | ||
1874 | /* The user janked out the cable... */ | |
1875 | static void usb_pwc_disconnect(struct usb_interface *intf) | |
1876 | { | |
1877 | struct pwc_device *pdev; | |
1878 | int hint; | |
1879 | ||
1880 | lock_kernel(); | |
1881 | pdev = usb_get_intfdata (intf); | |
1882 | usb_set_intfdata (intf, NULL); | |
1883 | if (pdev == NULL) { | |
2b455db6 | 1884 | PWC_ERROR("pwc_disconnect() Called without private pointer.\n"); |
1da177e4 LT |
1885 | goto disconnect_out; |
1886 | } | |
1887 | if (pdev->udev == NULL) { | |
2b455db6 | 1888 | PWC_ERROR("pwc_disconnect() already called for %p\n", pdev); |
1da177e4 LT |
1889 | goto disconnect_out; |
1890 | } | |
1891 | if (pdev->udev != interface_to_usbdev(intf)) { | |
2b455db6 | 1892 | PWC_ERROR("pwc_disconnect() Woops: pointer mismatch udev/pdev.\n"); |
1da177e4 LT |
1893 | goto disconnect_out; |
1894 | } | |
d56410e0 | 1895 | |
1da177e4 LT |
1896 | /* We got unplugged; this is signalled by an EPIPE error code */ |
1897 | if (pdev->vopen) { | |
2b455db6 | 1898 | PWC_INFO("Disconnected while webcam is in use!\n"); |
1da177e4 LT |
1899 | pdev->error_status = EPIPE; |
1900 | } | |
1901 | ||
1902 | /* Alert waiting processes */ | |
1903 | wake_up_interruptible(&pdev->frameq); | |
1904 | /* Wait until device is closed */ | |
85237f20 | 1905 | if(pdev->vopen) { |
0b67f5c5 | 1906 | mutex_lock(&pdev->modlock); |
85237f20 | 1907 | pdev->unplugged = 1; |
0b67f5c5 ON |
1908 | mutex_unlock(&pdev->modlock); |
1909 | pwc_iso_stop(pdev); | |
85237f20 ON |
1910 | } else { |
1911 | /* Device is closed, so we can safely unregister it */ | |
1912 | PWC_DEBUG_PROBE("Unregistering video device in disconnect().\n"); | |
1913 | pwc_cleanup(pdev); | |
1914 | /* Free memory (don't set pdev to 0 just yet) */ | |
1915 | kfree(pdev); | |
1da177e4 LT |
1916 | |
1917 | disconnect_out: | |
85237f20 ON |
1918 | /* search device_hint[] table if we occupy a slot, by any chance */ |
1919 | for (hint = 0; hint < MAX_DEV_HINTS; hint++) | |
1920 | if (device_hint[hint].pdev == pdev) | |
1921 | device_hint[hint].pdev = NULL; | |
1922 | } | |
1da177e4 LT |
1923 | |
1924 | unlock_kernel(); | |
1925 | } | |
1926 | ||
1da177e4 LT |
1927 | /* *grunt* We have to do atoi ourselves :-( */ |
1928 | static int pwc_atoi(const char *s) | |
1929 | { | |
1930 | int k = 0; | |
1931 | ||
1932 | k = 0; | |
1933 | while (*s != '\0' && *s >= '0' && *s <= '9') { | |
1934 | k = 10 * k + (*s - '0'); | |
1935 | s++; | |
1936 | } | |
1937 | return k; | |
1938 | } | |
1939 | ||
1940 | ||
d56410e0 MCC |
1941 | /* |
1942 | * Initialization code & module stuff | |
1da177e4 LT |
1943 | */ |
1944 | ||
2b455db6 LS |
1945 | static char *size; |
1946 | static int fps; | |
1947 | static int fbufs; | |
1948 | static int mbufs; | |
1da177e4 LT |
1949 | static int compression = -1; |
1950 | static int leds[2] = { -1, -1 }; | |
64a6f950 | 1951 | static unsigned int leds_nargs; |
2b455db6 | 1952 | static char *dev_hint[MAX_DEV_HINTS]; |
64a6f950 | 1953 | static unsigned int dev_hint_nargs; |
2b455db6 LS |
1954 | |
1955 | module_param(size, charp, 0444); | |
1956 | module_param(fps, int, 0444); | |
1957 | module_param(fbufs, int, 0444); | |
1958 | module_param(mbufs, int, 0444); | |
05ad3907 | 1959 | #ifdef CONFIG_USB_PWC_DEBUG |
2b455db6 LS |
1960 | module_param_named(trace, pwc_trace, int, 0644); |
1961 | #endif | |
1962 | module_param(power_save, int, 0444); | |
1963 | module_param(compression, int, 0444); | |
1964 | module_param_array(leds, int, &leds_nargs, 0444); | |
1965 | module_param_array(dev_hint, charp, &dev_hint_nargs, 0444); | |
1da177e4 | 1966 | |
1da177e4 | 1967 | MODULE_PARM_DESC(size, "Initial image size. One of sqcif, qsif, qcif, sif, cif, vga"); |
1da177e4 | 1968 | MODULE_PARM_DESC(fps, "Initial frames per second. Varies with model, useful range 5-30"); |
1da177e4 | 1969 | MODULE_PARM_DESC(fbufs, "Number of internal frame buffers to reserve"); |
1da177e4 | 1970 | MODULE_PARM_DESC(mbufs, "Number of external (mmap()ed) image buffers"); |
1da177e4 | 1971 | MODULE_PARM_DESC(trace, "For debugging purposes"); |
1da177e4 | 1972 | MODULE_PARM_DESC(power_save, "Turn power save feature in camera on or off"); |
1da177e4 | 1973 | MODULE_PARM_DESC(compression, "Preferred compression quality. Range 0 (uncompressed) to 3 (high compression)"); |
1da177e4 | 1974 | MODULE_PARM_DESC(leds, "LED on,off time in milliseconds"); |
1da177e4 LT |
1975 | MODULE_PARM_DESC(dev_hint, "Device node hints"); |
1976 | ||
1977 | MODULE_DESCRIPTION("Philips & OEM USB webcam driver"); | |
1978 | MODULE_AUTHOR("Luc Saillard <luc@saillard.org>"); | |
1979 | MODULE_LICENSE("GPL"); | |
2b455db6 LS |
1980 | MODULE_ALIAS("pwcx"); |
1981 | MODULE_VERSION( PWC_VERSION ); | |
1da177e4 LT |
1982 | |
1983 | static int __init usb_pwc_init(void) | |
1984 | { | |
1985 | int i, sz; | |
1986 | char *sizenames[PSZ_MAX] = { "sqcif", "qsif", "qcif", "sif", "cif", "vga" }; | |
1987 | ||
2b455db6 LS |
1988 | PWC_INFO("Philips webcam module version " PWC_VERSION " loaded.\n"); |
1989 | PWC_INFO("Supports Philips PCA645/646, PCVC675/680/690, PCVC720[40]/730/740/750 & PCVC830/840.\n"); | |
1990 | PWC_INFO("Also supports the Askey VC010, various Logitech Quickcams, Samsung MPC-C10 and MPC-C30,\n"); | |
1991 | PWC_INFO("the Creative WebCam 5 & Pro Ex, SOTEC Afina Eye and Visionite VCS-UC300 and VCS-UM100.\n"); | |
1da177e4 LT |
1992 | |
1993 | if (fps) { | |
1994 | if (fps < 4 || fps > 30) { | |
2b455db6 | 1995 | PWC_ERROR("Framerate out of bounds (4-30).\n"); |
1da177e4 LT |
1996 | return -EINVAL; |
1997 | } | |
1998 | default_fps = fps; | |
2b455db6 | 1999 | PWC_DEBUG_MODULE("Default framerate set to %d.\n", default_fps); |
1da177e4 LT |
2000 | } |
2001 | ||
2b455db6 | 2002 | if (size) { |
1da177e4 LT |
2003 | /* string; try matching with array */ |
2004 | for (sz = 0; sz < PSZ_MAX; sz++) { | |
2005 | if (!strcmp(sizenames[sz], size)) { /* Found! */ | |
2006 | default_size = sz; | |
2007 | break; | |
2008 | } | |
2009 | } | |
2010 | if (sz == PSZ_MAX) { | |
2b455db6 | 2011 | PWC_ERROR("Size not recognized; try size=[sqcif | qsif | qcif | sif | cif | vga].\n"); |
1da177e4 LT |
2012 | return -EINVAL; |
2013 | } | |
2b455db6 | 2014 | PWC_DEBUG_MODULE("Default image size set to %s [%dx%d].\n", sizenames[default_size], pwc_image_sizes[default_size].x, pwc_image_sizes[default_size].y); |
1da177e4 LT |
2015 | } |
2016 | if (mbufs) { | |
2017 | if (mbufs < 1 || mbufs > MAX_IMAGES) { | |
2b455db6 | 2018 | PWC_ERROR("Illegal number of mmap() buffers; use a number between 1 and %d.\n", MAX_IMAGES); |
1da177e4 LT |
2019 | return -EINVAL; |
2020 | } | |
2b455db6 LS |
2021 | pwc_mbufs = mbufs; |
2022 | PWC_DEBUG_MODULE("Number of image buffers set to %d.\n", pwc_mbufs); | |
1da177e4 LT |
2023 | } |
2024 | if (fbufs) { | |
2025 | if (fbufs < 2 || fbufs > MAX_FRAMES) { | |
2b455db6 | 2026 | PWC_ERROR("Illegal number of frame buffers; use a number between 2 and %d.\n", MAX_FRAMES); |
1da177e4 LT |
2027 | return -EINVAL; |
2028 | } | |
2029 | default_fbufs = fbufs; | |
2b455db6 | 2030 | PWC_DEBUG_MODULE("Number of frame buffers set to %d.\n", default_fbufs); |
1da177e4 | 2031 | } |
05ad3907 | 2032 | #ifdef CONFIG_USB_PWC_DEBUG |
2b455db6 LS |
2033 | if (pwc_trace >= 0) { |
2034 | PWC_DEBUG_MODULE("Trace options: 0x%04x\n", pwc_trace); | |
1da177e4 | 2035 | } |
2b455db6 | 2036 | #endif |
1da177e4 LT |
2037 | if (compression >= 0) { |
2038 | if (compression > 3) { | |
2b455db6 | 2039 | PWC_ERROR("Invalid compression setting; use a number between 0 (uncompressed) and 3 (high).\n"); |
1da177e4 LT |
2040 | return -EINVAL; |
2041 | } | |
2042 | pwc_preferred_compression = compression; | |
2b455db6 | 2043 | PWC_DEBUG_MODULE("Preferred compression set to %d.\n", pwc_preferred_compression); |
1da177e4 LT |
2044 | } |
2045 | if (power_save) | |
2b455db6 | 2046 | PWC_DEBUG_MODULE("Enabling power save on open/close.\n"); |
1da177e4 LT |
2047 | if (leds[0] >= 0) |
2048 | led_on = leds[0]; | |
2049 | if (leds[1] >= 0) | |
2050 | led_off = leds[1]; | |
2051 | ||
093cf723 | 2052 | /* Big device node whoopla. Basically, it allows you to assign a |
1da177e4 LT |
2053 | device node (/dev/videoX) to a camera, based on its type |
2054 | & serial number. The format is [type[.serialnumber]:]node. | |
2055 | ||
2056 | Any camera that isn't matched by these rules gets the next | |
2057 | available free device node. | |
2058 | */ | |
2059 | for (i = 0; i < MAX_DEV_HINTS; i++) { | |
2060 | char *s, *colon, *dot; | |
2061 | ||
2062 | /* This loop also initializes the array */ | |
2063 | device_hint[i].pdev = NULL; | |
2064 | s = dev_hint[i]; | |
2065 | if (s != NULL && *s != '\0') { | |
2066 | device_hint[i].type = -1; /* wildcard */ | |
2067 | strcpy(device_hint[i].serial_number, "*"); | |
2068 | ||
2069 | /* parse string: chop at ':' & '/' */ | |
2070 | colon = dot = s; | |
2071 | while (*colon != '\0' && *colon != ':') | |
2072 | colon++; | |
2073 | while (*dot != '\0' && *dot != '.') | |
2074 | dot++; | |
2075 | /* Few sanity checks */ | |
2076 | if (*dot != '\0' && dot > colon) { | |
2b455db6 | 2077 | PWC_ERROR("Malformed camera hint: the colon must be after the dot.\n"); |
1da177e4 LT |
2078 | return -EINVAL; |
2079 | } | |
2080 | ||
2081 | if (*colon == '\0') { | |
2082 | /* No colon */ | |
2083 | if (*dot != '\0') { | |
2b455db6 | 2084 | PWC_ERROR("Malformed camera hint: no colon + device node given.\n"); |
1da177e4 LT |
2085 | return -EINVAL; |
2086 | } | |
2087 | else { | |
2088 | /* No type or serial number specified, just a number. */ | |
2089 | device_hint[i].device_node = pwc_atoi(s); | |
2090 | } | |
2091 | } | |
2092 | else { | |
2093 | /* There's a colon, so we have at least a type and a device node */ | |
2094 | device_hint[i].type = pwc_atoi(s); | |
2095 | device_hint[i].device_node = pwc_atoi(colon + 1); | |
2096 | if (*dot != '\0') { | |
2097 | /* There's a serial number as well */ | |
2098 | int k; | |
d56410e0 | 2099 | |
1da177e4 LT |
2100 | dot++; |
2101 | k = 0; | |
2102 | while (*dot != ':' && k < 29) { | |
2103 | device_hint[i].serial_number[k++] = *dot; | |
2104 | dot++; | |
2105 | } | |
2106 | device_hint[i].serial_number[k] = '\0'; | |
2107 | } | |
2108 | } | |
2b455db6 LS |
2109 | PWC_TRACE("device_hint[%d]:\n", i); |
2110 | PWC_TRACE(" type : %d\n", device_hint[i].type); | |
2111 | PWC_TRACE(" serial# : %s\n", device_hint[i].serial_number); | |
2112 | PWC_TRACE(" node : %d\n", device_hint[i].device_node); | |
1da177e4 LT |
2113 | } |
2114 | else | |
2115 | device_hint[i].type = 0; /* not filled */ | |
2116 | } /* ..for MAX_DEV_HINTS */ | |
2117 | ||
2b455db6 | 2118 | PWC_DEBUG_PROBE("Registering driver at address 0x%p.\n", &pwc_driver); |
1da177e4 LT |
2119 | return usb_register(&pwc_driver); |
2120 | } | |
2121 | ||
2122 | static void __exit usb_pwc_exit(void) | |
2123 | { | |
2b455db6 | 2124 | PWC_DEBUG_MODULE("Deregistering driver.\n"); |
1da177e4 | 2125 | usb_deregister(&pwc_driver); |
2b455db6 | 2126 | PWC_INFO("Philips webcam module removed.\n"); |
1da177e4 LT |
2127 | } |
2128 | ||
2129 | module_init(usb_pwc_init); | |
2130 | module_exit(usb_pwc_exit); | |
2131 | ||
2b455db6 | 2132 | /* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |